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Thread: Ubuntu 14.10, Dell XPS 13, Intel 7260, intermittent wireless connection

  1. #1
    Join Date
    Apr 2006
    Location
    Londrina, Brasil
    Beans
    200
    Distro
    Ubuntu 14.04 Trusty Tahr

    Ubuntu 14.10, Dell XPS 13, Intel 7260, intermittent wireless connection

    I have an intermittent wireless connection with a Dell XPS 13 (Intel Wireless 7260, Ubuntu 14.10). I provide the output of the wireless script below (when connection was working). This problem persists across different routers. Sometimes the 2.4 connection works and the 5.0 doesn't, sometimes both work. When the connection works it can be excellent but it randomly disconnects. If anybody could look at the output of the script and suggest where the problem lies and any potential solution(s), I would be grateful. With thanks.

    Code:
    ########## wireless info START ##########
    
    Report from: 19 Jan 2015 11:25 GMT +0000
    
    Booted last: 19 Jan 2015 11:22 GMT +0000
    
    Script from: 20 Sep 2014 23:04 UTC +0000
    
    ##### release ###########################
    
    Distributor ID:	Ubuntu
    Description:	Ubuntu 14.10
    Release:	14.10
    Codename:	utopic
    
    ##### kernel ############################
    
    Linux 3.16.0-29-generic #39-Ubuntu SMP Mon Dec 15 22:27:29 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
    
    Parameters: ro, quiet, splash, vt.handoff=7
    
    ##### desktop ###########################
    
    Ubuntu
    
    ##### lspci #############################
    
    02:00.0 Network controller [0280]: Intel Corporation Wireless 7260 [8086:08b1] (rev 6b)
    	Subsystem: Intel Corporation Dual Band Wireless-AC 7260 [8086:c470]
    	Kernel driver in use: iwlwifi
    
    ##### lsusb #############################
    
    Bus 001 Device 002: ID 8087:8000 Intel Corp. 
    Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
    Bus 002 Device 005: ID 8087:07dc Intel Corp. 
    Bus 002 Device 004: ID 0bda:5752 Realtek Semiconductor Corp. 
    Bus 002 Device 003: ID 06cb:0af8 Synaptics, Inc. 
    Bus 002 Device 007: ID 1058:070a Western Digital Technologies, Inc. My Passport Essential SE
    Bus 002 Device 006: ID 059f:0c41 LaCie, Ltd 
    Bus 002 Device 002: ID 04b4:6570 Cypress Semiconductor Corp. 
    Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    
    ##### PCMCIA card info ##################
    
    ##### rfkill ############################
    
    0: hci0: Bluetooth
    	Soft blocked: no
    	Hard blocked: no
    1: phy0: Wireless LAN
    	Soft blocked: no
    	Hard blocked: no
    
    ##### lsmod #############################
    
    dell_wmi               12761  0 
    sparse_keymap          13948  1 dell_wmi
    dell_laptop            18227  0 
    dcdbas                 14928  1 dell_laptop
    iwlmvm                217797  0 
    mac80211              660592  1 iwlmvm
    iwlwifi               183038  1 iwlmvm
    cfg80211              510218  3 iwlwifi,mac80211,iwlmvm
    wmi                    19193  1 dell_wmi
    snd_soc_rt5640         93042  0 
    snd_soc_rl6231         13037  1 snd_soc_rt5640
    snd_soc_core          200108  1 snd_soc_rt5640
    snd_pcm               104102  7 snd_soc_rt5640,snd_soc_core,snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel,snd_hda_controller,snd_pcm_dmaengine
    
    ##### interfaces ########################
    
    auto lo
    iface lo inet loopback
    
    ##### ifconfig ##########################
    
    lxcbr0    Link encap:Ethernet  HWaddr <MAC 'lxcbr0' [IF]>  
              inet addr:10.0.3.1  Bcast:10.0.3.255  Mask:255.255.255.0
              inet6 addr: fe80::28fe:ccff:fe1f:3e3e/64 Scope:Link
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              RX packets:0 errors:0 dropped:0 overruns:0 frame:0
              TX packets:68 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:0 
              RX bytes:0 (0.0 B)  TX bytes:12624 (12.6 KB)
    
    virbr0    Link encap:Ethernet  HWaddr <MAC 'virbr0' [IF]>  
              inet addr:192.168.122.1  Bcast:192.168.122.255  Mask:255.255.255.0
              UP BROADCAST MULTICAST  MTU:1500  Metric:1
              RX packets:0 errors:0 dropped:0 overruns:0 frame:0
              TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:0 
              RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
    
    wlan0     Link encap:Ethernet  HWaddr <MAC 'wlan0' [IF]>  
              inet addr:192.168.0.2  Bcast:192.168.0.255  Mask:255.255.255.0
              inet6 addr: fe80::5ec5:d4ff:fe50:4c95/64 Scope:Link
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              RX packets:1817 errors:0 dropped:0 overruns:0 frame:0
              TX packets:2064 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000 
              RX bytes:1023120 (1.0 MB)  TX bytes:397220 (397.2 KB)
    
    ##### iwconfig ##########################
    
    virbr0    no wireless extensions.
    
    lo        no wireless extensions.
    
    lxcbr0    no wireless extensions.
    
    wlan0     IEEE 802.11abgn  ESSID:"Pescador"  
              Mode:Managed  Frequency:2.437 GHz  Access Point: <MAC 'Pescador' [AC1]>   
              Bit Rate=86.7 Mb/s   Tx-Power=22 dBm   
              Retry short limit:7   RTS thr:off   Fragment thr:off
              Power Management:on
              Link Quality=44/70  Signal level=-66 dBm  
              Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
              Tx excessive retries:7  Invalid misc:130   Missed beacon:0
    
    ##### route #############################
    
    Kernel IP routing table
    Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
    0.0.0.0         192.168.0.1     0.0.0.0         UG    0      0        0 wlan0
    10.0.3.0        0.0.0.0         255.255.255.0   U     0      0        0 lxcbr0
    192.168.0.0     0.0.0.0         255.255.255.0   U     9      0        0 wlan0
    192.168.122.0   0.0.0.0         255.255.255.0   U     0      0        0 virbr0
    
    ##### resolv.conf #######################
    
    nameserver 127.0.1.1
    
    ##### nm-tool ###########################
    
    NetworkManager Tool
    
    State: connected (global)
    
    - Device: wlan0  [Pescador] ----------------------------------------------------
      Type:              802.11 WiFi
      Driver:            iwlwifi
      State:             connected
      Default:           yes
      HW Address:        <MAC 'wlan0' [IF]>
    
      Capabilities:
        Speed:           86 Mb/s
    
      Wireless Properties
        WEP Encryption:  yes
        WPA Encryption:  yes
        WPA2 Encryption: yes
    
      Wireless Access Points (* = current AP)
        virginmedia6835145: Infra, <MAC 'virginmedia6835145' [AN1]>, Freq 2462 MHz, Rate 54 Mb/s, Strength 20 WPA WPA2
        Pescador5:       Infra, <MAC 'Pescador5' [AC4]>, Freq 5500 MHz, Rate 54 Mb/s, Strength 49 WPA2
        mineimo:         Infra, <MAC 'mineimo' [AC3]>, Freq 2462 MHz, Rate 54 Mb/s, Strength 27 WPA2
        ADDON GWAR3000:  Infra, <MAC 'ADDON GWAR3000' [AC2]>, Freq 2462 MHz, Rate 54 Mb/s, Strength 42 WEP
        *Pescador:       Infra, <MAC 'Pescador' [AC1]>, Freq 2437 MHz, Rate 54 Mb/s, Strength 54 WPA2
    
      IPv4 Settings:
        Address:         192.168.0.2
        Prefix:          24 (255.255.255.0)
        Gateway:         192.168.0.1
    
        DNS:             192.168.0.1
    
    ##### NetworkManager.state ##############
    
    [main]
    NetworkingEnabled=true
    WirelessEnabled=true
    WWANEnabled=true
    WimaxEnabled=true
    
    ##### NetworkManager.conf ###############
    
    [main]
    plugins=ifupdown,keyfile,ofono
    dns=dnsmasq
    
    [ifupdown]
    managed=false
    
    ##### NetworkManager profiles ###########
    
    [[/etc/NetworkManager/system-connections/Pescador5]] (600 root)
    [connection] id=Pescador5 | type=802-11-wireless
    [802-11-wireless] ssid=Pescador5 | mac-address=<MAC 'wlan0' [IF]>
    [ipv4] method=auto
    [ipv6] method=auto
    
    [[/etc/NetworkManager/system-connections/Pescador]] (600 root)
    [connection] id=Pescador | type=802-11-wireless
    [802-11-wireless] ssid=Pescador | mac-address=<MAC 'wlan0' [IF]>
    [ipv4] method=auto
    [ipv6] method=auto
    
    [[/etc/NetworkManager/system-connections/CambridgePlace]] (600 root)
    [connection] id=CambridgePlace | type=802-11-wireless
    [802-11-wireless] ssid=CambridgePlace | mac-address=<MAC 'wlan0' [IF]>
    [ipv4] method=auto
    [ipv6] method=auto
    
    [[/etc/NetworkManager/system-connections/HOTEL BROADBAND]] (600 root)
    [connection] id=HOTEL BROADBAND | type=802-11-wireless
    [802-11-wireless] ssid=HOTEL BROADBAND | mac-address=<MAC 'wlan0' [IF]>
    [ipv6] method=auto
    [ipv4] method=auto
    
    ##### iw reg get ########################
    
    Region: Europe/London (based on set time zone)
    
    country GB: DFS-UNSET
    	(2402 - 2482 @ 40), (N/A, 20)
    	(5170 - 5250 @ 40), (N/A, 20)
    	(5250 - 5330 @ 40), (N/A, 20), DFS
    	(5490 - 5710 @ 40), (N/A, 27), DFS
    	(57240 - 65880 @ 2160), (N/A, 40), NO-OUTDOOR
    
    ##### iwlist channels ###################
    
    virbr0    no frequency information.
    
    lo        no frequency information.
    
    lxcbr0    no frequency information.
    
    wlan0     32 channels in total; available frequencies :
              Channel 01 : 2.412 GHz
              Channel 02 : 2.417 GHz
              Channel 03 : 2.422 GHz
              Channel 04 : 2.427 GHz
              Channel 05 : 2.432 GHz
              Channel 06 : 2.437 GHz
              Channel 07 : 2.442 GHz
              Channel 08 : 2.447 GHz
              Channel 09 : 2.452 GHz
              Channel 10 : 2.457 GHz
              Channel 11 : 2.462 GHz
              Channel 12 : 2.467 GHz
              Channel 13 : 2.472 GHz
              Channel 36 : 5.18 GHz
              Channel 40 : 5.2 GHz
              Channel 44 : 5.22 GHz
              Channel 48 : 5.24 GHz
              Channel 52 : 5.26 GHz
              Channel 56 : 5.28 GHz
              Channel 60 : 5.3 GHz
              Channel 64 : 5.32 GHz
              Channel 100 : 5.5 GHz
              Channel 104 : 5.52 GHz
              Channel 108 : 5.54 GHz
              Channel 112 : 5.56 GHz
              Channel 116 : 5.58 GHz
              Channel 120 : 5.6 GHz
              Channel 124 : 5.62 GHz
              Channel 128 : 5.64 GHz
              Channel 132 : 5.66 GHz
              Channel 136 : 5.68 GHz
              Channel 140 : 5.7 GHz
              Current Frequency:2.437 GHz (Channel 6)
    
    ##### iwlist scan #######################
    
    Channel occupancy:
    
          1   APs on   Frequency:2.437 GHz (Channel 6)
          2   APs on   Frequency:2.462 GHz (Channel 11)
          1   APs on   Frequency:5.5 GHz (Channel 100)
    
    wlan0     Scan completed :
              Cell 01 - Address: <MAC 'Pescador' [AC1]>
                        Channel:6
                        Frequency:2.437 GHz (Channel 6)
                        Quality=44/70  Signal level=-66 dBm  
                        Encryption key:on
                        ESSID:"Pescador"
                        Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                                  9 Mb/s; 12 Mb/s; 18 Mb/s
                        Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                        Mode:Master
                        Extra:tsf=00000010ca0668f6
                        Extra: Last beacon: 88ms ago
                        IE: IEEE 802.11i/WPA2 Version 1
                            Group Cipher : CCMP
                            Pairwise Ciphers (1) : CCMP
                            Authentication Suites (1) : PSK
              Cell 02 - Address: <MAC 'ADDON GWAR3000' [AC2]>
                        Channel:11
                        Frequency:2.462 GHz (Channel 11)
                        Quality=34/70  Signal level=-76 dBm  
                        Encryption key:on
                        ESSID:"ADDON GWAR3000"
                        Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 22 Mb/s
                        Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
                                  36 Mb/s; 48 Mb/s; 54 Mb/s
                        Mode:Master
                        Extra:tsf=000002667540e107
                        Extra: Last beacon: 88ms ago
              Cell 03 - Address: <MAC 'mineimo' [AC3]>
                        Channel:11
                        Frequency:2.462 GHz (Channel 11)
                        Quality=26/70  Signal level=-84 dBm  
                        Encryption key:on
                        ESSID:"mineimo"
                        Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                                  24 Mb/s; 36 Mb/s; 54 Mb/s
                        Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
                        Mode:Master
                        Extra:tsf=00000099d8e6f35b
                        Extra: Last beacon: 88ms ago
                        IE: IEEE 802.11i/WPA2 Version 1
                            Group Cipher : CCMP
                            Pairwise Ciphers (1) : CCMP
                            Authentication Suites (1) : PSK
    
    lo        Interface doesn't support scanning.
    
    lxcbr0    Interface doesn't support scanning.
    
    00000000000000000000000000000000
              Cell 04 - Address: <MAC 'Pescador5' [AC4]>
                        Channel:100
                        Frequency:5.5 GHz (Channel 100)
                        Quality=40/70  Signal level=-70 dBm  
                        Encryption key:on
                        ESSID:"Pescador5"
                        Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
                                  36 Mb/s; 48 Mb/s; 54 Mb/s
                        Mode:Master
                        Extra:tsf=00000010c5f395a8
                        Extra: Last beacon: 88ms ago
                        IE: IEEE 802.11i/WPA2 Version 1
                            Group Cipher : CCMP
                            Pairwise Ciphers (1) : CCMP
                            Authentication Suites (1) : PSK
    
    ##### module infos ######################
    
    [iwlmvm]
    filename:       /lib/modules/3.16.0-29-generic/kernel/drivers/net/wireless/iwlwifi/mvm/iwlmvm.ko
    license:        GPL
    author:         Copyright(c) 2003- 2014 Intel Corporation <ilw@linux.intel.com>
    version:        in-tree:
    description:    The new Intel(R) wireless AGN driver for Linux
    srcversion:     DF2B4108DD59AC2EC4C7D5B
    depends:        iwlwifi,mac80211,cfg80211
    intree:         Y
    vermagic:       3.16.0-29-generic SMP mod_unload modversions 
    signer:         Magrathea: Glacier signing key
    sig_key:        70:63:7F:DE:89:46:26:78:AF:F2:D9:C2:BB:12:90:BE:2F:ED:1F:B1
    sig_hashalgo:   sha512
    parm:           init_dbg:set to true to debug an ASSERT in INIT fw (default: false (bool)
    parm:           power_scheme:power management scheme: 1-active, 2-balanced, 3-low power, default: 2 (int)
    
    [mac80211]
    filename:       /lib/modules/3.16.0-29-generic/kernel/net/mac80211/mac80211.ko
    license:        GPL
    description:    IEEE 802.11 subsystem
    srcversion:     B3A65EB1DAE59CB6B5FD971
    depends:        cfg80211
    intree:         Y
    vermagic:       3.16.0-29-generic SMP mod_unload modversions 
    signer:         Magrathea: Glacier signing key
    sig_key:        70:63:7F:DE:89:46:26:78:AF:F2:D9:C2:BB:12:90:BE:2F:ED:1F:B1
    sig_hashalgo:   sha512
    parm:           max_nullfunc_tries:Maximum nullfunc tx tries before disconnecting (reason 4). (int)
    parm:           max_probe_tries:Maximum probe tries before disconnecting (reason 4). (int)
    parm:           beacon_loss_count:Number of beacon intervals before we decide beacon was lost. (int)
    parm:           probe_wait_ms:Maximum time(ms) to wait for probe response before disconnecting (reason 4). (int)
    parm:           ieee80211_default_rc_algo:Default rate control algorithm for mac80211 to use (charp)
    
    [iwlwifi]
    filename:       /lib/modules/3.16.0-29-generic/kernel/drivers/net/wireless/iwlwifi/iwlwifi.ko
    license:        GPL
    author:         Copyright(c) 2003- 2014 Intel Corporation <ilw@linux.intel.com>
    version:        in-tree:
    description:    Intel(R) Wireless WiFi driver for Linux
    firmware:       iwlwifi-100-5.ucode
    firmware:       iwlwifi-1000-5.ucode
    firmware:       iwlwifi-135-6.ucode
    firmware:       iwlwifi-105-6.ucode
    firmware:       iwlwifi-2030-6.ucode
    firmware:       iwlwifi-2000-6.ucode
    firmware:       iwlwifi-5150-2.ucode
    firmware:       iwlwifi-5000-5.ucode
    firmware:       iwlwifi-6000g2b-6.ucode
    firmware:       iwlwifi-6000g2a-5.ucode
    firmware:       iwlwifi-6050-5.ucode
    firmware:       iwlwifi-6000-4.ucode
    firmware:       iwlwifi-7265-9.ucode
    firmware:       iwlwifi-3160-9.ucode
    firmware:       iwlwifi-7260-9.ucode
    firmware:       iwlwifi-8000-8.ucode
    srcversion:     D335B9FC08B25C4ADA0BD33
    depends:        cfg80211
    intree:         Y
    vermagic:       3.16.0-29-generic SMP mod_unload modversions 
    signer:         Magrathea: Glacier signing key
    sig_key:        70:63:7F:DE:89:46:26:78:AF:F2:D9:C2:BB:12:90:BE:2F:ED:1F:B1
    sig_hashalgo:   sha512
    parm:           swcrypto:using crypto in software (default 0 [hardware]) (int)
    parm:           11n_disable:disable 11n functionality, bitmap: 1: full, 2: disable agg TX, 4: disable agg RX, 8 enable agg TX (uint)
    parm:           amsdu_size_8K:enable 8K amsdu size (default 0) (int)
    parm:           fw_restart:restart firmware in case of error (default true) (bool)
    parm:           antenna_coupling:specify antenna coupling in dB (defualt: 0 dB) (int)
    parm:           wd_disable:Disable stuck queue watchdog timer 0=system default, 1=disable (default: 1) (int)
    parm:           nvm_file:NVM file name (charp)
    parm:           uapsd_disable:disable U-APSD functionality (default: N) (bool)
    parm:           bt_coex_active:enable wifi/bt co-exist (default: enable) (bool)
    parm:           led_mode:0=system default, 1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0) (int)
    parm:           power_save:enable WiFi power management (default: disable) (bool)
    parm:           power_level:default power save level (range from 1 - 5, default: 1) (int)
    parm:           fw_monitor:firmware monitor - to debug FW (default: false - needs lots of memory) (bool)
    
    [cfg80211]
    filename:       /lib/modules/3.16.0-29-generic/kernel/net/wireless/cfg80211.ko
    description:    wireless configuration support
    license:        GPL
    author:         Johannes Berg
    srcversion:     DEE8EAA48495E392CD51C2D
    depends:        
    intree:         Y
    vermagic:       3.16.0-29-generic SMP mod_unload modversions 
    signer:         Magrathea: Glacier signing key
    sig_key:        70:63:7F:DE:89:46:26:78:AF:F2:D9:C2:BB:12:90:BE:2F:ED:1F:B1
    sig_hashalgo:   sha512
    parm:           ieee80211_regdom:IEEE 802.11 regulatory domain code (charp)
    parm:           cfg80211_disable_40mhz_24ghz:Disable 40MHz support in the 2.4GHz band (bool)
    
    ##### module parameters #################
    
    [iwlmvm]
    init_dbg: N
    power_scheme: 2
    
    [mac80211]
    beacon_loss_count: 7
    ieee80211_default_rc_algo: minstrel_ht
    max_nullfunc_tries: 2
    max_probe_tries: 5
    probe_wait_ms: 500
    
    [iwlwifi]
    11n_disable: 0
    amsdu_size_8K: 0
    antenna_coupling: 0
    bt_coex_active: Y
    fw_monitor: N
    fw_restart: Y
    led_mode: 0
    nvm_file: (null)
    power_level: 0
    power_save: N
    swcrypto: 0
    uapsd_disable: N
    wd_disable: 1
    
    [cfg80211]
    cfg80211_disable_40mhz_24ghz: N
    ieee80211_regdom: 00
    
    ##### /etc/modules ######################
    
    lp
    lp
    
    ##### modprobe options ##################
    
    [/etc/modprobe.d/blacklist-ath_pci.conf]
    blacklist ath_pci
    
    [/etc/modprobe.d/blacklist.conf]
    blacklist evbug
    blacklist usbmouse
    blacklist usbkbd
    blacklist eepro100
    blacklist de4x5
    blacklist eth1394
    blacklist snd_intel8x0m
    blacklist snd_aw2
    blacklist i2c_i801
    blacklist prism54
    blacklist bcm43xx
    blacklist garmin_gps
    blacklist asus_acpi
    blacklist snd_pcsp
    blacklist pcspkr
    blacklist amd76x_edac
    
    [/etc/modprobe.d/blacklist-rare-network.conf]
    alias net-pf-3 off
    alias net-pf-6 off
    alias net-pf-9 off
    alias net-pf-11 off
    alias net-pf-12 off
    alias net-pf-19 off
    alias net-pf-21 off
    alias net-pf-36 off
    
    [/etc/modprobe.d/iwlwifi.conf]
    remove iwlwifi \
    (/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) \
    && /sbin/modprobe -r mac80211
    
    [/etc/modprobe.d/mlx4.conf]
    softdep mlx4_core post: mlx4_en
    
    [/etc/modprobe.d/modesetting.conf]
    options cirrus modeset=1
    options mgag200 modeset=1
    
    [/etc/modprobe.d/usbhid.conf]
    options usbhid quirks=0x06cb:0x0af8:0x20000000
    
    ##### rc.local ##########################
    
    exit 0
    
    ##### pm-utils ##########################
    
    [/etc/pm/power.d/disable_wol] (777 root)
    CONFFILE=/etc/default/tlp
    LIBDIRS='/usr/lib /usr/lib64'
    for d in ${LIBDIRS}; do
        if [ -d "${d}/pm-utils/power.d" ]; then
            blocked="${d}/pm-utils/power.d/${0##*/}"
            break
        fi
    done
    if [ -n "$blocked" ] && [ -x "$blocked" ]; then
        # else nothing to disable -> don't read $CONFFILE
        if [ -e "$CONFFILE" ] && . "$CONFFILE" -- && [ "$TLP_ENABLE" = '1' ]; then
            # TLP is enabled -> disable $blocked
            echo "Notice: '${blocked}' disabled by TLP."
        else
            exec "$blocked" $*
        fi
    fi
    exit 0
    
    [/etc/pm/power.d/laptop-mode] (777 root)
    CONFFILE=/etc/default/tlp
    LIBDIRS='/usr/lib /usr/lib64'
    for d in ${LIBDIRS}; do
        if [ -d "${d}/pm-utils/power.d" ]; then
            blocked="${d}/pm-utils/power.d/${0##*/}"
            break
        fi
    done
    if [ -n "$blocked" ] && [ -x "$blocked" ]; then
        # else nothing to disable -> don't read $CONFFILE
        if [ -e "$CONFFILE" ] && . "$CONFFILE" -- && [ "$TLP_ENABLE" = '1' ]; then
            # TLP is enabled -> disable $blocked
            echo "Notice: '${blocked}' disabled by TLP."
        else
            exec "$blocked" $*
        fi
    fi
    exit 0
    
    [/etc/pm/power.d/pci_devices] (777 root)
    CONFFILE=/etc/default/tlp
    LIBDIRS='/usr/lib /usr/lib64'
    for d in ${LIBDIRS}; do
        if [ -d "${d}/pm-utils/power.d" ]; then
            blocked="${d}/pm-utils/power.d/${0##*/}"
            break
        fi
    done
    if [ -n "$blocked" ] && [ -x "$blocked" ]; then
        # else nothing to disable -> don't read $CONFFILE
        if [ -e "$CONFFILE" ] && . "$CONFFILE" -- && [ "$TLP_ENABLE" = '1' ]; then
            # TLP is enabled -> disable $blocked
            echo "Notice: '${blocked}' disabled by TLP."
        else
            exec "$blocked" $*
        fi
    fi
    exit 0
    
    [/etc/pm/power.d/pcie_aspm] (777 root)
    CONFFILE=/etc/default/tlp
    LIBDIRS='/usr/lib /usr/lib64'
    for d in ${LIBDIRS}; do
        if [ -d "${d}/pm-utils/power.d" ]; then
            blocked="${d}/pm-utils/power.d/${0##*/}"
            break
        fi
    done
    if [ -n "$blocked" ] && [ -x "$blocked" ]; then
        # else nothing to disable -> don't read $CONFFILE
        if [ -e "$CONFFILE" ] && . "$CONFFILE" -- && [ "$TLP_ENABLE" = '1' ]; then
            # TLP is enabled -> disable $blocked
            echo "Notice: '${blocked}' disabled by TLP."
        else
            exec "$blocked" $*
        fi
    fi
    exit 0
    
    [/etc/pm/power.d/sched-powersave] (777 root)
    CONFFILE=/etc/default/tlp
    LIBDIRS='/usr/lib /usr/lib64'
    for d in ${LIBDIRS}; do
        if [ -d "${d}/pm-utils/power.d" ]; then
            blocked="${d}/pm-utils/power.d/${0##*/}"
            break
        fi
    done
    if [ -n "$blocked" ] && [ -x "$blocked" ]; then
        # else nothing to disable -> don't read $CONFFILE
        if [ -e "$CONFFILE" ] && . "$CONFFILE" -- && [ "$TLP_ENABLE" = '1' ]; then
            # TLP is enabled -> disable $blocked
            echo "Notice: '${blocked}' disabled by TLP."
        else
            exec "$blocked" $*
        fi
    fi
    exit 0
    
    [/etc/pm/power.d/usb_bluetooth] (777 root)
    CONFFILE=/etc/default/tlp
    LIBDIRS='/usr/lib /usr/lib64'
    for d in ${LIBDIRS}; do
        if [ -d "${d}/pm-utils/power.d" ]; then
            blocked="${d}/pm-utils/power.d/${0##*/}"
            break
        fi
    done
    if [ -n "$blocked" ] && [ -x "$blocked" ]; then
        # else nothing to disable -> don't read $CONFFILE
        if [ -e "$CONFFILE" ] && . "$CONFFILE" -- && [ "$TLP_ENABLE" = '1' ]; then
            # TLP is enabled -> disable $blocked
            echo "Notice: '${blocked}' disabled by TLP."
        else
            exec "$blocked" $*
        fi
    fi
    exit 0
    
    [/etc/pm/power.d/wireless] (777 root)
    CONFFILE=/etc/default/tlp
    LIBDIRS='/usr/lib /usr/lib64'
    for d in ${LIBDIRS}; do
        if [ -d "${d}/pm-utils/power.d" ]; then
            blocked="${d}/pm-utils/power.d/${0##*/}"
            break
        fi
    done
    if [ -n "$blocked" ] && [ -x "$blocked" ]; then
        # else nothing to disable -> don't read $CONFFILE
        if [ -e "$CONFFILE" ] && . "$CONFFILE" -- && [ "$TLP_ENABLE" = '1' ]; then
            # TLP is enabled -> disable $blocked
            echo "Notice: '${blocked}' disabled by TLP."
        else
            exec "$blocked" $*
        fi
    fi
    exit 0
    
    [/etc/pm/power.d/xfs_buffer] (777 root)
    CONFFILE=/etc/default/tlp
    LIBDIRS='/usr/lib /usr/lib64'
    for d in ${LIBDIRS}; do
        if [ -d "${d}/pm-utils/power.d" ]; then
            blocked="${d}/pm-utils/power.d/${0##*/}"
            break
        fi
    done
    if [ -n "$blocked" ] && [ -x "$blocked" ]; then
        # else nothing to disable -> don't read $CONFFILE
        if [ -e "$CONFFILE" ] && . "$CONFFILE" -- && [ "$TLP_ENABLE" = '1' ]; then
            # TLP is enabled -> disable $blocked
            echo "Notice: '${blocked}' disabled by TLP."
        else
            exec "$blocked" $*
        fi
    fi
    exit 0
    
    ##### udev rules ########################
    
    [/etc/udev/rules.d/70-persistent-net.rules]
    # PCI device 0x8086:/sys/devices/pci0000:00/0000:00:1c.2/0000:02:00.0 (iwlwifi)
    SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC 'wlan0' [IF]>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0"
    
    ##### dmesg #############################
    
    [   76.094626] wlan0: deauthenticating from <MAC 'Pescador5' [AC4]> by local choice (Reason: 3=DEAUTH_LEAVING)
    [   78.101347] iwlwifi 0000:02:00.0: fail to flush all tx fifo queues Q 2
    [   78.101352] iwlwifi 0000:02:00.0: Current SW read_ptr 147 write_ptr 1
    [   78.101390] iwl data: 00000000: 00 00 f8 ff 00 00 00 00 07 00 00 00 00 00 00 00  ................
    [   78.101402] iwlwifi 0000:02:00.0: FH TRBs(0) = 0x00000000
    [   78.101414] iwlwifi 0000:02:00.0: FH TRBs(1) = 0x801020a2
    [   78.101425] iwlwifi 0000:02:00.0: FH TRBs(2) = 0x00000000
    [   78.101437] iwlwifi 0000:02:00.0: FH TRBs(3) = 0x8030000a
    [   78.101448] iwlwifi 0000:02:00.0: FH TRBs(4) = 0x00000000
    [   78.101460] iwlwifi 0000:02:00.0: FH TRBs(5) = 0x00000000
    [   78.101471] iwlwifi 0000:02:00.0: FH TRBs(6) = 0x00000000
    [   78.101483] iwlwifi 0000:02:00.0: FH TRBs(7) = 0x0070907e
    [   78.101532] iwlwifi 0000:02:00.0: Q 0 is active and mapped to fifo 3 ra_tid 0x0000 [11,11]
    [   78.101581] iwlwifi 0000:02:00.0: Q 1 is active and mapped to fifo 2 ra_tid 0x0000 [0,0]
    [   78.101629] iwlwifi 0000:02:00.0: Q 2 is active and mapped to fifo 1 ra_tid 0x0000 [147,1]
    [   78.101678] iwlwifi 0000:02:00.0: Q 3 is active and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   78.101726] iwlwifi 0000:02:00.0: Q 4 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   78.101775] iwlwifi 0000:02:00.0: Q 5 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   78.101823] iwlwifi 0000:02:00.0: Q 6 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   78.101872] iwlwifi 0000:02:00.0: Q 7 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   78.101920] iwlwifi 0000:02:00.0: Q 8 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   78.101969] iwlwifi 0000:02:00.0: Q 9 is active and mapped to fifo 7 ra_tid 0x0000 [127,127]
    [   78.102017] iwlwifi 0000:02:00.0: Q 10 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   78.102066] iwlwifi 0000:02:00.0: Q 11 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   78.102114] iwlwifi 0000:02:00.0: Q 12 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   78.102163] iwlwifi 0000:02:00.0: Q 13 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   78.102212] iwlwifi 0000:02:00.0: Q 14 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   78.102260] iwlwifi 0000:02:00.0: Q 15 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   78.102309] iwlwifi 0000:02:00.0: Q 16 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   78.102357] iwlwifi 0000:02:00.0: Q 17 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   78.102406] iwlwifi 0000:02:00.0: Q 18 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   78.102454] iwlwifi 0000:02:00.0: Q 19 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   80.111581] iwlwifi 0000:02:00.0: fail to flush all tx fifo queues Q 0
    [   80.111588] iwlwifi 0000:02:00.0: Current SW read_ptr 11 write_ptr 12
    [   80.111628] iwl data: 00000000: 00 08 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    [   80.111649] iwlwifi 0000:02:00.0: FH TRBs(0) = 0x00000000
    [   80.111662] iwlwifi 0000:02:00.0: FH TRBs(1) = 0x801020a2
    [   80.111675] iwlwifi 0000:02:00.0: FH TRBs(2) = 0x00000000
    [   80.111687] iwlwifi 0000:02:00.0: FH TRBs(3) = 0x8030000b
    [   80.111701] iwlwifi 0000:02:00.0: FH TRBs(4) = 0x00000000
    [   80.111714] iwlwifi 0000:02:00.0: FH TRBs(5) = 0x00000000
    [   80.111727] iwlwifi 0000:02:00.0: FH TRBs(6) = 0x00000000
    [   80.111740] iwlwifi 0000:02:00.0: FH TRBs(7) = 0x0070907e
    [   80.111792] iwlwifi 0000:02:00.0: Q 0 is active and mapped to fifo 3 ra_tid 0x0000 [11,12]
    [   80.111852] iwlwifi 0000:02:00.0: Q 1 is active and mapped to fifo 2 ra_tid 0x0000 [0,0]
    [   80.111901] iwlwifi 0000:02:00.0: Q 2 is active and mapped to fifo 1 ra_tid 0x0000 [147,6]
    [   80.111950] iwlwifi 0000:02:00.0: Q 3 is active and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   80.111998] iwlwifi 0000:02:00.0: Q 4 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   80.112047] iwlwifi 0000:02:00.0: Q 5 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   80.112096] iwlwifi 0000:02:00.0: Q 6 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   80.112144] iwlwifi 0000:02:00.0: Q 7 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   80.112193] iwlwifi 0000:02:00.0: Q 8 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   80.112242] iwlwifi 0000:02:00.0: Q 9 is active and mapped to fifo 7 ra_tid 0x0000 [127,127]
    [   80.112291] iwlwifi 0000:02:00.0: Q 10 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   80.112340] iwlwifi 0000:02:00.0: Q 11 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   80.112388] iwlwifi 0000:02:00.0: Q 12 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   80.112437] iwlwifi 0000:02:00.0: Q 13 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   80.112485] iwlwifi 0000:02:00.0: Q 14 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   80.112534] iwlwifi 0000:02:00.0: Q 15 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   80.112582] iwlwifi 0000:02:00.0: Q 16 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   80.112631] iwlwifi 0000:02:00.0: Q 17 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   80.112679] iwlwifi 0000:02:00.0: Q 18 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   80.112728] iwlwifi 0000:02:00.0: Q 19 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   83.742366] wlan0: authenticate with <MAC 'Pescador' [AC1]>
    [   83.745295] wlan0: send auth to <MAC 'Pescador' [AC1]> (try 1/3)
    [   83.747062] wlan0: authenticated
    [   83.747649] wlan0: associate with <MAC 'Pescador' [AC1]> (try 1/3)
    [   83.752265] wlan0: RX AssocResp from <MAC 'Pescador' [AC1]> (capab=0x411 status=0 aid=1)
    [   83.753366] wlan0: associated
    
    ########## wireless info END ############
    Aridus

  2. #2
    Join Date
    Aug 2005
    Location
    South Carolina, USA
    Beans
    23,597
    Distro
    Ubuntu 17.10 Artful Aardvark

    Re: Ubuntu 14.10, Dell XPS 13, Intel 7260, intermittent wireless connection

    [ 78.101347] iwlwifi 0000:02:00.0: fail to flush all tx fifo queues Q 2
    [ 78.101352] iwlwifi 0000:02:00.0: Current SW read_ptr 147 write_ptr 1
    Wonderful. It's a well known bug that I thought had been fixed. Let's see if we can try a fix. From the terminal:
    Code:
    sudo -i
    echo "options iwlwifi wd_disable=0"  >>  /etc/modprobe.d/iwlwifi.conf
    exit
    Reboot and let us hear the result. If it is not working as expected, post:
    Code:
    dmesg | grep iwl

    --------------
    Reference: https://bugs.launchpad.net/ubuntu/+s...e/+bug/1270808

    http://people.canonical.com/~sforshee/iwlwifi/utopic/
    Last edited by chili555; January 19th, 2015 at 03:44 PM.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  3. #3
    Join Date
    Apr 2006
    Location
    Londrina, Brasil
    Beans
    200
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Ubuntu 14.10, Dell XPS 13, Intel 7260, intermittent wireless connection

    Dear Chili555 - Many thanks for this response. I have made the change and am now monitoring the situation. I will re-post my conclusions here. With thanks!
    Aridus

  4. #4
    Join Date
    Apr 2006
    Location
    Londrina, Brasil
    Beans
    200
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Ubuntu 14.10, Dell XPS 13, Intel 7260, intermittent wireless connection

    An interim report: I have been successfully using the wirless for the previous 3 hours. I will make one final report tomorrow, following further use.

    Thank you chili555 for the reference to the bug in launchpad.
    Aridus

  5. #5
    Join Date
    Apr 2006
    Location
    Londrina, Brasil
    Beans
    200
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Ubuntu 14.10, Dell XPS 13, Intel 7260, intermittent wireless connection

    A further report: after successfully using the wireless connection all afternoon (and I could switch between 2.4 and 5.0 frequencies) I suspended the laptop. Upon resume I could not connect to either frequency. The output of dmesg | grep iwl was
    Code:
    martin@martin:~$ dmesg | grep iwl
    [ 6162.337110] iwlwifi 0000:02:00.0: RF_KILL bit toggled to enable radio.
    [ 6165.395377] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    [ 6165.395628] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    [ 9025.567346] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    [ 9025.567595] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    [ 9072.128213] iwlwifi 0000:02:00.0: fail to flush all tx fifo queues Q 16
    [ 9072.128216] iwlwifi 0000:02:00.0: Current SW read_ptr 246 write_ptr 19
    [ 9072.128252] iwl data: 00000000: 3f 00 00 00 00 00 00 00 00 00 c0 ff 00 00 00 00  ?...............
    [ 9072.128264] iwlwifi 0000:02:00.0: FH TRBs(0) = 0x00000000
    [ 9072.128275] iwlwifi 0000:02:00.0: FH TRBs(1) = 0xc0110005
    [ 9072.128286] iwlwifi 0000:02:00.0: FH TRBs(2) = 0x00000000
    [ 9072.128297] iwlwifi 0000:02:00.0: FH TRBs(3) = 0x80300006
    [ 9072.128307] iwlwifi 0000:02:00.0: FH TRBs(4) = 0x00000000
    [ 9072.128318] iwlwifi 0000:02:00.0: FH TRBs(5) = 0x00000000
    [ 9072.128329] iwlwifi 0000:02:00.0: FH TRBs(6) = 0x00000000
    [ 9072.128340] iwlwifi 0000:02:00.0: FH TRBs(7) = 0x00709059
    [ 9072.128388] iwlwifi 0000:02:00.0: Q 0 is active and mapped to fifo 3 ra_tid 0x0000 [7,7]
    [ 9072.128435] iwlwifi 0000:02:00.0: Q 1 is active and mapped to fifo 2 ra_tid 0x0000 [0,0]
    [ 9072.128482] iwlwifi 0000:02:00.0: Q 2 is active and mapped to fifo 1 ra_tid 0x0000 [124,124]
    [ 9072.128530] iwlwifi 0000:02:00.0: Q 3 is active and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9072.128577] iwlwifi 0000:02:00.0: Q 4 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9072.128624] iwlwifi 0000:02:00.0: Q 5 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9072.128672] iwlwifi 0000:02:00.0: Q 6 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9072.128719] iwlwifi 0000:02:00.0: Q 7 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9072.128766] iwlwifi 0000:02:00.0: Q 8 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9072.128814] iwlwifi 0000:02:00.0: Q 9 is active and mapped to fifo 7 ra_tid 0x0000 [90,90]
    [ 9072.128862] iwlwifi 0000:02:00.0: Q 10 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9072.128909] iwlwifi 0000:02:00.0: Q 11 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9072.128957] iwlwifi 0000:02:00.0: Q 12 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9072.129005] iwlwifi 0000:02:00.0: Q 13 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9072.129052] iwlwifi 0000:02:00.0: Q 14 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9072.129100] iwlwifi 0000:02:00.0: Q 15 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9072.129148] iwlwifi 0000:02:00.0: Q 16 is active and mapped to fifo 1 ra_tid 0x0000 [246,19]
    [ 9072.129197] iwlwifi 0000:02:00.0: Q 17 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9072.129244] iwlwifi 0000:02:00.0: Q 18 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9072.129291] iwlwifi 0000:02:00.0: Q 19 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9074.132420] iwlwifi 0000:02:00.0: fail to flush all tx fifo queues Q 0
    [ 9074.132424] iwlwifi 0000:02:00.0: Current SW read_ptr 7 write_ptr 8
    [ 9074.132460] iwl data: 00000000: 80 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    [ 9074.132472] iwlwifi 0000:02:00.0: FH TRBs(0) = 0x00000000
    [ 9074.132483] iwlwifi 0000:02:00.0: FH TRBs(1) = 0xc0110005
    [ 9074.132494] iwlwifi 0000:02:00.0: FH TRBs(2) = 0x00000000
    [ 9074.132504] iwlwifi 0000:02:00.0: FH TRBs(3) = 0x80300007
    [ 9074.132515] iwlwifi 0000:02:00.0: FH TRBs(4) = 0x00000000
    [ 9074.132526] iwlwifi 0000:02:00.0: FH TRBs(5) = 0x00000000
    [ 9074.132537] iwlwifi 0000:02:00.0: FH TRBs(6) = 0x00000000
    [ 9074.132548] iwlwifi 0000:02:00.0: FH TRBs(7) = 0x00709059
    [ 9074.132596] iwlwifi 0000:02:00.0: Q 0 is active and mapped to fifo 3 ra_tid 0x0000 [7,8]
    [ 9074.132643] iwlwifi 0000:02:00.0: Q 1 is active and mapped to fifo 2 ra_tid 0x0000 [0,0]
    [ 9074.132690] iwlwifi 0000:02:00.0: Q 2 is active and mapped to fifo 1 ra_tid 0x0000 [124,124]
    [ 9074.132738] iwlwifi 0000:02:00.0: Q 3 is active and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9074.132801] iwlwifi 0000:02:00.0: Q 4 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9074.132849] iwlwifi 0000:02:00.0: Q 5 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9074.132896] iwlwifi 0000:02:00.0: Q 6 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9074.132944] iwlwifi 0000:02:00.0: Q 7 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9074.132992] iwlwifi 0000:02:00.0: Q 8 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9074.133039] iwlwifi 0000:02:00.0: Q 9 is active and mapped to fifo 7 ra_tid 0x0000 [90,90]
    [ 9074.133087] iwlwifi 0000:02:00.0: Q 10 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9074.133135] iwlwifi 0000:02:00.0: Q 11 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9074.133183] iwlwifi 0000:02:00.0: Q 12 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9074.133230] iwlwifi 0000:02:00.0: Q 13 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9074.133278] iwlwifi 0000:02:00.0: Q 14 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9074.133325] iwlwifi 0000:02:00.0: Q 15 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9074.133373] iwlwifi 0000:02:00.0: Q 16 is active and mapped to fifo 1 ra_tid 0x0000 [246,20]
    [ 9074.133421] iwlwifi 0000:02:00.0: Q 17 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9074.133468] iwlwifi 0000:02:00.0: Q 18 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9074.133515] iwlwifi 0000:02:00.0: Q 19 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9079.517862] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    [ 9079.518114] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    [ 9086.925067] iwlwifi 0000:02:00.0: No association and the time event is over already...
    [ 9101.410571] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    [ 9101.410825] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    [ 9279.415117] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    [ 9279.415370] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    [ 9368.356520] iwlwifi 0000:02:00.0: fail to flush all tx fifo queues Q 16
    [ 9368.356524] iwlwifi 0000:02:00.0: Current SW read_ptr 2 write_ptr 163
    [ 9368.356561] iwl data: 00000000: fc ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    [ 9368.356572] iwlwifi 0000:02:00.0: FH TRBs(0) = 0x00000000
    [ 9368.356583] iwlwifi 0000:02:00.0: FH TRBs(1) = 0xc011000f
    [ 9368.356594] iwlwifi 0000:02:00.0: FH TRBs(2) = 0x00000000
    [ 9368.356605] iwlwifi 0000:02:00.0: FH TRBs(3) = 0x8030000b
    [ 9368.356616] iwlwifi 0000:02:00.0: FH TRBs(4) = 0x00000000
    [ 9368.356627] iwlwifi 0000:02:00.0: FH TRBs(5) = 0x00000000
    [ 9368.356638] iwlwifi 0000:02:00.0: FH TRBs(6) = 0x00000000
    [ 9368.356649] iwlwifi 0000:02:00.0: FH TRBs(7) = 0x00709080
    [ 9368.356697] iwlwifi 0000:02:00.0: Q 0 is active and mapped to fifo 3 ra_tid 0x0000 [12,12]
    [ 9368.356745] iwlwifi 0000:02:00.0: Q 1 is active and mapped to fifo 2 ra_tid 0x0000 [0,0]
    [ 9368.356792] iwlwifi 0000:02:00.0: Q 2 is active and mapped to fifo 1 ra_tid 0x0000 [120,120]
    [ 9368.356840] iwlwifi 0000:02:00.0: Q 3 is active and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9368.356888] iwlwifi 0000:02:00.0: Q 4 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9368.356935] iwlwifi 0000:02:00.0: Q 5 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9368.356984] iwlwifi 0000:02:00.0: Q 6 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9368.357034] iwlwifi 0000:02:00.0: Q 7 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9368.357082] iwlwifi 0000:02:00.0: Q 8 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9368.357130] iwlwifi 0000:02:00.0: Q 9 is active and mapped to fifo 7 ra_tid 0x0000 [129,129]
    [ 9368.357178] iwlwifi 0000:02:00.0: Q 10 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9368.357225] iwlwifi 0000:02:00.0: Q 11 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9368.357273] iwlwifi 0000:02:00.0: Q 12 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9368.357321] iwlwifi 0000:02:00.0: Q 13 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9368.357372] iwlwifi 0000:02:00.0: Q 14 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9368.357421] iwlwifi 0000:02:00.0: Q 15 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9368.357470] iwlwifi 0000:02:00.0: Q 16 is active and mapped to fifo 1 ra_tid 0x0000 [2,163]
    [ 9368.357520] iwlwifi 0000:02:00.0: Q 17 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9368.357569] iwlwifi 0000:02:00.0: Q 18 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9368.357617] iwlwifi 0000:02:00.0: Q 19 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9370.365756] iwlwifi 0000:02:00.0: fail to flush all tx fifo queues Q 0
    [ 9370.365759] iwlwifi 0000:02:00.0: Current SW read_ptr 12 write_ptr 13
    [ 9370.365797] iwl data: 00000000: 00 10 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    [ 9370.365808] iwlwifi 0000:02:00.0: FH TRBs(0) = 0x00000000
    [ 9370.365819] iwlwifi 0000:02:00.0: FH TRBs(1) = 0xc011000f
    [ 9370.365830] iwlwifi 0000:02:00.0: FH TRBs(2) = 0x00000000
    [ 9370.365841] iwlwifi 0000:02:00.0: FH TRBs(3) = 0x8030000c
    [ 9370.365853] iwlwifi 0000:02:00.0: FH TRBs(4) = 0x00000000
    [ 9370.365864] iwlwifi 0000:02:00.0: FH TRBs(5) = 0x00000000
    [ 9370.365875] iwlwifi 0000:02:00.0: FH TRBs(6) = 0x00000000
    [ 9370.365886] iwlwifi 0000:02:00.0: FH TRBs(7) = 0x00709080
    [ 9370.365935] iwlwifi 0000:02:00.0: Q 0 is active and mapped to fifo 3 ra_tid 0x0000 [12,13]
    [ 9370.365983] iwlwifi 0000:02:00.0: Q 1 is active and mapped to fifo 2 ra_tid 0x0000 [0,0]
    [ 9370.366031] iwlwifi 0000:02:00.0: Q 2 is active and mapped to fifo 1 ra_tid 0x0000 [120,120]
    [ 9370.366079] iwlwifi 0000:02:00.0: Q 3 is active and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9370.366127] iwlwifi 0000:02:00.0: Q 4 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9370.366175] iwlwifi 0000:02:00.0: Q 5 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9370.366223] iwlwifi 0000:02:00.0: Q 6 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9370.366271] iwlwifi 0000:02:00.0: Q 7 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9370.366319] iwlwifi 0000:02:00.0: Q 8 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9370.366367] iwlwifi 0000:02:00.0: Q 9 is active and mapped to fifo 7 ra_tid 0x0000 [129,129]
    [ 9370.366414] iwlwifi 0000:02:00.0: Q 10 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9370.366462] iwlwifi 0000:02:00.0: Q 11 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9370.366510] iwlwifi 0000:02:00.0: Q 12 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9370.366558] iwlwifi 0000:02:00.0: Q 13 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9370.366606] iwlwifi 0000:02:00.0: Q 14 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9370.366654] iwlwifi 0000:02:00.0: Q 15 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9370.366702] iwlwifi 0000:02:00.0: Q 16 is active and mapped to fifo 1 ra_tid 0x0000 [2,168]
    [ 9370.366750] iwlwifi 0000:02:00.0: Q 17 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9370.366798] iwlwifi 0000:02:00.0: Q 18 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9370.366846] iwlwifi 0000:02:00.0: Q 19 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [ 9809.946253] Modules linked in: hid_generic hidp nls_utf8 udf crc_itu_t ctr ccm xt_conntrack ipt_REJECT ses enclosure pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) nvram xt_CHECKSUM iptable_mangle ipt_MASQUERADE iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack xt_tcpudp bridge stp llc iptable_filter ip_tables x_tables uas usb_storage uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media hid_multitouch snd_hda_codec_hdmi joydev arc4 btusb dell_wmi hid_rmi sparse_keymap dell_laptop dcdbas intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel dm_multipath scsi_dh kvm iwlmvm mac80211 crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel iwlwifi aes_x86_64 lrw snd_hda_codec_realtek gf128mul glue_helper snd_hda_codec_generic
    [ 9809.946390] Modules linked in: hid_generic hidp nls_utf8 udf crc_itu_t ctr ccm xt_conntrack ipt_REJECT ses enclosure pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) nvram xt_CHECKSUM iptable_mangle ipt_MASQUERADE iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack xt_tcpudp bridge stp llc iptable_filter ip_tables x_tables uas usb_storage uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media hid_multitouch snd_hda_codec_hdmi joydev arc4 btusb dell_wmi hid_rmi sparse_keymap dell_laptop dcdbas intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel dm_multipath scsi_dh kvm iwlmvm mac80211 crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel iwlwifi aes_x86_64 lrw snd_hda_codec_realtek gf128mul glue_helper snd_hda_codec_generic
    [ 9810.818075] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    [ 9810.818321] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    [ 9818.075576] iwlwifi 0000:02:00.0: No association and the time event is over already...
    I rebooted and could connect on 2.4 but not on 5.0. The output of grep iwl when connected on 2.4 was:
    Code:
    [    3.056511] iwlwifi 0000:02:00.0: irq 59 for MSI/MSI-X
    [    3.070285] iwlwifi 0000:02:00.0: loaded firmware version 25.228.9.0 op_mode iwlmvm
    [    3.114035] iwlwifi 0000:02:00.0: Detected Intel(R) Dual Band Wireless AC 7260, REV=0x144
    [    3.114118] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    [    3.114365] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    [    4.089407] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'
    [    4.096759] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    [    4.097015] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    and when apparently connected (icon in panel shows connection but cannot access internet) on 5.0 the output of grep was:
    Code:
    [    3.056511] iwlwifi 0000:02:00.0: irq 59 for MSI/MSI-X
    [    3.070285] iwlwifi 0000:02:00.0: loaded firmware version 25.228.9.0 op_mode iwlmvm
    [    3.114035] iwlwifi 0000:02:00.0: Detected Intel(R) Dual Band Wireless AC 7260, REV=0x144
    [    3.114118] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    [    3.114365] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    [    4.089407] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'
    [    4.096759] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    [    4.097015] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    martin@martin:~$ dmesg | grep iwl
    [    3.056511] iwlwifi 0000:02:00.0: irq 59 for MSI/MSI-X
    [    3.070285] iwlwifi 0000:02:00.0: loaded firmware version 25.228.9.0 op_mode iwlmvm
    [    3.114035] iwlwifi 0000:02:00.0: Detected Intel(R) Dual Band Wireless AC 7260, REV=0x144
    [    3.114118] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    [    3.114365] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    [    4.089407] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'
    [    4.096759] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    [    4.097015] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    [   96.818071] iwlwifi 0000:02:00.0: fail to flush all tx fifo queues Q 16
    [   96.818075] iwlwifi 0000:02:00.0: Current SW read_ptr 139 write_ptr 76
    [   96.818133] iwl data: 00000000: 00 f8 ff 07 00 00 00 00 00 00 00 00 00 00 00 00  ................
    [   96.818146] iwlwifi 0000:02:00.0: FH TRBs(0) = 0x00000000
    [   96.818157] iwlwifi 0000:02:00.0: FH TRBs(1) = 0xc011009a
    [   96.818169] iwlwifi 0000:02:00.0: FH TRBs(2) = 0x00000000
    [   96.818180] iwlwifi 0000:02:00.0: FH TRBs(3) = 0x8030000b
    [   96.818192] iwlwifi 0000:02:00.0: FH TRBs(4) = 0x00000000
    [   96.818203] iwlwifi 0000:02:00.0: FH TRBs(5) = 0x00000000
    [   96.818215] iwlwifi 0000:02:00.0: FH TRBs(6) = 0x00000000
    [   96.818226] iwlwifi 0000:02:00.0: FH TRBs(7) = 0x0070907e
    [   96.818275] iwlwifi 0000:02:00.0: Q 0 is active and mapped to fifo 3 ra_tid 0x0000 [12,12]
    [   96.818324] iwlwifi 0000:02:00.0: Q 1 is active and mapped to fifo 2 ra_tid 0x0000 [0,0]
    [   96.818372] iwlwifi 0000:02:00.0: Q 2 is active and mapped to fifo 1 ra_tid 0x0000 [131,131]
    [   96.818421] iwlwifi 0000:02:00.0: Q 3 is active and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   96.818469] iwlwifi 0000:02:00.0: Q 4 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   96.818518] iwlwifi 0000:02:00.0: Q 5 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   96.818566] iwlwifi 0000:02:00.0: Q 6 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   96.818614] iwlwifi 0000:02:00.0: Q 7 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   96.818663] iwlwifi 0000:02:00.0: Q 8 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   96.818711] iwlwifi 0000:02:00.0: Q 9 is active and mapped to fifo 7 ra_tid 0x0000 [127,127]
    [   96.818760] iwlwifi 0000:02:00.0: Q 10 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   96.818809] iwlwifi 0000:02:00.0: Q 11 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   96.818859] iwlwifi 0000:02:00.0: Q 12 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   96.818908] iwlwifi 0000:02:00.0: Q 13 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   96.818957] iwlwifi 0000:02:00.0: Q 14 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   96.819006] iwlwifi 0000:02:00.0: Q 15 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   96.819055] iwlwifi 0000:02:00.0: Q 16 is active and mapped to fifo 1 ra_tid 0x0000 [139,76]
    [   96.819103] iwlwifi 0000:02:00.0: Q 17 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   96.819152] iwlwifi 0000:02:00.0: Q 18 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   96.819201] iwlwifi 0000:02:00.0: Q 19 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   98.828286] iwlwifi 0000:02:00.0: fail to flush all tx fifo queues Q 0
    [   98.828291] iwlwifi 0000:02:00.0: Current SW read_ptr 12 write_ptr 13
    [   98.828329] iwl data: 00000000: 00 10 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    [   98.828341] iwlwifi 0000:02:00.0: FH TRBs(0) = 0x00000000
    [   98.828353] iwlwifi 0000:02:00.0: FH TRBs(1) = 0xc011009a
    [   98.828364] iwlwifi 0000:02:00.0: FH TRBs(2) = 0x00000000
    [   98.828376] iwlwifi 0000:02:00.0: FH TRBs(3) = 0x8030000c
    [   98.828387] iwlwifi 0000:02:00.0: FH TRBs(4) = 0x00000000
    [   98.828399] iwlwifi 0000:02:00.0: FH TRBs(5) = 0x00000000
    [   98.828410] iwlwifi 0000:02:00.0: FH TRBs(6) = 0x00000000
    [   98.828422] iwlwifi 0000:02:00.0: FH TRBs(7) = 0x0070907e
    [   98.828471] iwlwifi 0000:02:00.0: Q 0 is active and mapped to fifo 3 ra_tid 0x0000 [12,13]
    [   98.828519] iwlwifi 0000:02:00.0: Q 1 is active and mapped to fifo 2 ra_tid 0x0000 [0,0]
    [   98.828568] iwlwifi 0000:02:00.0: Q 2 is active and mapped to fifo 1 ra_tid 0x0000 [131,131]
    [   98.828616] iwlwifi 0000:02:00.0: Q 3 is active and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   98.828665] iwlwifi 0000:02:00.0: Q 4 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   98.828713] iwlwifi 0000:02:00.0: Q 5 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   98.828762] iwlwifi 0000:02:00.0: Q 6 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   98.828810] iwlwifi 0000:02:00.0: Q 7 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   98.828859] iwlwifi 0000:02:00.0: Q 8 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   98.828907] iwlwifi 0000:02:00.0: Q 9 is active and mapped to fifo 7 ra_tid 0x0000 [127,127]
    [   98.828956] iwlwifi 0000:02:00.0: Q 10 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   98.829004] iwlwifi 0000:02:00.0: Q 11 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   98.829054] iwlwifi 0000:02:00.0: Q 12 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   98.829104] iwlwifi 0000:02:00.0: Q 13 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   98.829155] iwlwifi 0000:02:00.0: Q 14 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   98.829211] iwlwifi 0000:02:00.0: Q 15 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   98.829260] iwlwifi 0000:02:00.0: Q 16 is active and mapped to fifo 1 ra_tid 0x0000 [139,77]
    [   98.829308] iwlwifi 0000:02:00.0: Q 17 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   98.829357] iwlwifi 0000:02:00.0: Q 18 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   98.829405] iwlwifi 0000:02:00.0: Q 19 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    With thanks.
    Aridus

  6. #6
    Join Date
    Aug 2005
    Location
    South Carolina, USA
    Beans
    23,597
    Distro
    Ubuntu 17.10 Artful Aardvark

    Re: Ubuntu 14.10, Dell XPS 13, Intel 7260, intermittent wireless connection

    We see the symptom here again in both dmesg listings:
    fail to flush all tx fifo queues Q 16
    In the referenced bug report, there is a link to a patched kernel, also known in Ubuntu as linux-image: http://people.canonical.com/~sforshee/iwlwifi/utopic/

    I suggest you download and install the 64-bit (amd64) deb files for linux-image and linux-image-extras and install them with:
    Code:
    cd ~/Downloads
    ...or wherever you downloaded the files.
    Code:
    sudo dpkg linux-image*.deb
    Reboot into the newer kernel and test. As before, if the performance isn't fixed, please post:
    Code:
    dmesg | grep iwl
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  7. #7
    Join Date
    Apr 2006
    Location
    Londrina, Brasil
    Beans
    200
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Ubuntu 14.10, Dell XPS 13, Intel 7260, intermittent wireless connection

    Thank you. Following installation of the two files you suggested and booting wiith the correct kernel, the problem persists. Herewith

    Code:
    dmesg | grep iwl
    [    0.000000] Linux version 3.16.0-23-generic (sforshee@gloin) (gcc version 4.9.1 (Ubuntu 4.9.1-16ubuntu6) ) #30+iwlwifi201410162230 SMP Thu Oct 16 20:42:30 UTC 2014 (Ubuntu 3.16.0-23.30+iwlwifi201410162230-generic 3.16.4)
    [    3.288174] iwlwifi 0000:02:00.0: irq 60 for MSI/MSI-X
    [    3.296928] iwlwifi 0000:02:00.0: loaded firmware version 25.228.9.0 op_mode iwlmvm
    [    3.332156] iwlwifi 0000:02:00.0: Detected Intel(R) Dual Band Wireless AC 7260, REV=0x144
    [    3.332241] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    [    3.332513] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    [    3.635394] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'
    [    3.961255] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    [    3.961505] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    martin@martin:~$ dmesg | grep iwl
    [    0.000000] Linux version 3.16.0-23-generic (sforshee@gloin) (gcc version 4.9.1 (Ubuntu 4.9.1-16ubuntu6) ) #30+iwlwifi201410162230 SMP Thu Oct 16 20:42:30 UTC 2014 (Ubuntu 3.16.0-23.30+iwlwifi201410162230-generic 3.16.4)
    [    3.288174] iwlwifi 0000:02:00.0: irq 60 for MSI/MSI-X
    [    3.296928] iwlwifi 0000:02:00.0: loaded firmware version 25.228.9.0 op_mode iwlmvm
    [    3.332156] iwlwifi 0000:02:00.0: Detected Intel(R) Dual Band Wireless AC 7260, REV=0x144
    [    3.332241] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    [    3.332513] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    [    3.635394] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'
    [    3.961255] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    [    3.961505] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    [   92.434269] iwlwifi 0000:02:00.0: fail to flush all tx fifo queues Q 16
    [   92.434274] iwlwifi 0000:02:00.0: Current SW read_ptr 136 write_ptr 5
    [   92.434311] iwl data: 00000000: 00 ff ff 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    [   92.434323] iwlwifi 0000:02:00.0: FH TRBs(0) = 0x00000000
    [   92.434335] iwlwifi 0000:02:00.0: FH TRBs(1) = 0xc0110097
    [   92.434346] iwlwifi 0000:02:00.0: FH TRBs(2) = 0x00000000
    [   92.434358] iwlwifi 0000:02:00.0: FH TRBs(3) = 0x80300006
    [   92.434369] iwlwifi 0000:02:00.0: FH TRBs(4) = 0x00000000
    [   92.434381] iwlwifi 0000:02:00.0: FH TRBs(5) = 0x00000000
    [   92.434392] iwlwifi 0000:02:00.0: FH TRBs(6) = 0x00000000
    [   92.434404] iwlwifi 0000:02:00.0: FH TRBs(7) = 0x0070905a
    [   92.434453] iwlwifi 0000:02:00.0: Q 0 is active and mapped to fifo 3 ra_tid 0x0000 [7,7]
    [   92.434501] iwlwifi 0000:02:00.0: Q 1 is active and mapped to fifo 2 ra_tid 0x0000 [0,0]
    [   92.434550] iwlwifi 0000:02:00.0: Q 2 is active and mapped to fifo 1 ra_tid 0x0000 [126,126]
    [   92.434598] iwlwifi 0000:02:00.0: Q 3 is active and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   92.434647] iwlwifi 0000:02:00.0: Q 4 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   92.434695] iwlwifi 0000:02:00.0: Q 5 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   92.434744] iwlwifi 0000:02:00.0: Q 6 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   92.434792] iwlwifi 0000:02:00.0: Q 7 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   92.434840] iwlwifi 0000:02:00.0: Q 8 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   92.434889] iwlwifi 0000:02:00.0: Q 9 is active and mapped to fifo 7 ra_tid 0x0000 [91,91]
    [   92.434938] iwlwifi 0000:02:00.0: Q 10 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   92.434986] iwlwifi 0000:02:00.0: Q 11 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   92.435035] iwlwifi 0000:02:00.0: Q 12 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   92.435084] iwlwifi 0000:02:00.0: Q 13 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   92.435133] iwlwifi 0000:02:00.0: Q 14 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   92.435181] iwlwifi 0000:02:00.0: Q 15 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   92.435229] iwlwifi 0000:02:00.0: Q 16 is active and mapped to fifo 1 ra_tid 0x0000 [136,5]
    [   92.435278] iwlwifi 0000:02:00.0: Q 17 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   92.435326] iwlwifi 0000:02:00.0: Q 18 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   92.435375] iwlwifi 0000:02:00.0: Q 19 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   94.442532] iwlwifi 0000:02:00.0: fail to flush all tx fifo queues Q 0
    [   94.442537] iwlwifi 0000:02:00.0: Current SW read_ptr 7 write_ptr 8
    [   94.442575] iwl data: 00000000: 80 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    [   94.442587] iwlwifi 0000:02:00.0: FH TRBs(0) = 0x00000000
    [   94.442599] iwlwifi 0000:02:00.0: FH TRBs(1) = 0xc0110097
    [   94.442610] iwlwifi 0000:02:00.0: FH TRBs(2) = 0x00000000
    [   94.442622] iwlwifi 0000:02:00.0: FH TRBs(3) = 0x80300007
    [   94.442633] iwlwifi 0000:02:00.0: FH TRBs(4) = 0x00000000
    [   94.442665] iwlwifi 0000:02:00.0: FH TRBs(5) = 0x00000000
    [   94.442677] iwlwifi 0000:02:00.0: FH TRBs(6) = 0x00000000
    [   94.442688] iwlwifi 0000:02:00.0: FH TRBs(7) = 0x0070905a
    [   94.442738] iwlwifi 0000:02:00.0: Q 0 is active and mapped to fifo 3 ra_tid 0x0000 [7,8]
    [   94.442786] iwlwifi 0000:02:00.0: Q 1 is active and mapped to fifo 2 ra_tid 0x0000 [0,0]
    [   94.442835] iwlwifi 0000:02:00.0: Q 2 is active and mapped to fifo 1 ra_tid 0x0000 [126,126]
    [   94.442883] iwlwifi 0000:02:00.0: Q 3 is active and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   94.442931] iwlwifi 0000:02:00.0: Q 4 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   94.442980] iwlwifi 0000:02:00.0: Q 5 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   94.443028] iwlwifi 0000:02:00.0: Q 6 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   94.443077] iwlwifi 0000:02:00.0: Q 7 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   94.443125] iwlwifi 0000:02:00.0: Q 8 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   94.443174] iwlwifi 0000:02:00.0: Q 9 is active and mapped to fifo 7 ra_tid 0x0000 [91,91]
    [   94.443222] iwlwifi 0000:02:00.0: Q 10 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   94.443271] iwlwifi 0000:02:00.0: Q 11 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   94.443319] iwlwifi 0000:02:00.0: Q 12 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   94.443367] iwlwifi 0000:02:00.0: Q 13 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   94.443416] iwlwifi 0000:02:00.0: Q 14 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   94.443464] iwlwifi 0000:02:00.0: Q 15 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   94.443513] iwlwifi 0000:02:00.0: Q 16 is active and mapped to fifo 1 ra_tid 0x0000 [136,7]
    [   94.443561] iwlwifi 0000:02:00.0: Q 17 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   94.443610] iwlwifi 0000:02:00.0: Q 18 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    [   94.443658] iwlwifi 0000:02:00.0: Q 19 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
    '...fail to flush...' is still there.

    With thanks.
    Aridus

  8. #8
    Join Date
    May 2014
    Location
    /home
    Beans
    5,322
    Distro
    Ubuntu 16.04 Xenial Xerus

    Re: Ubuntu 14.10, Dell XPS 13, Intel 7260, intermittent wireless connection

    I think you should file a bug report https://bugs.launchpad.net/ubuntu/+s...mware/+filebug and mention that the proposed fix from Seth Forshee doesn't fix it for you

  9. #9
    Join Date
    Aug 2005
    Location
    South Carolina, USA
    Beans
    23,597
    Distro
    Ubuntu 17.10 Artful Aardvark

    Re: Ubuntu 14.10, Dell XPS 13, Intel 7260, intermittent wireless connection

    I suggest we install the iwlwifi suite from 3.18.1 where there is some indication this may be fixed. To compile the driver suite requires linux-headers which are unavailable for download for linux-image-3.16.0-23-generic_3.16.0-23.30+iwlwifi201410162230_amd64. Therefore, reboot, get to the GRUB menu by pressing both Shift keys and select the original 3.16.0-29-generic kernel you started with. Then remove the ineffective kernel:
    Code:
    sudo apt-get purge linux-image-3.16.0-23-generic_3.16.0-23.30+iwlwifi201410162230_amd64
    sudo apt-get purge linux-image-extras-3.16.0-23-generic_3.16.0-23.30+iwlwifi201410162230_amd64
    Please download this to your desktop: http://www.kernel.org/pub/linux/kern....18.1-1.tar.xz

    Right-click and select 'Extract Here.' Now, in the terminal:
    Code:
    sudo apt-get install linux-headers-generic build-essential
    cd ~/Desktop/backports-3.18.1-1
    make defconfig-iwlwifi
    make
    sudo make install
    sudo reboot
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  10. #10
    Join Date
    Apr 2006
    Location
    Londrina, Brasil
    Beans
    200
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Ubuntu 14.10, Dell XPS 13, Intel 7260, intermittent wireless connection

    Thank you again chili555! I have successfully followed your instructions. So far all is well and I can connect on both 2.4 and 5.0. The output of dmesg | grep iwl is currently:
    Code:
    [    3.183683] iwlwifi 0000:02:00.0: irq 60 for MSI/MSI-X
    [    3.185701] iwlwifi 0000:02:00.0: Direct firmware load failed with error -2
    [    3.185704] iwlwifi 0000:02:00.0: Falling back to user helper
    [    4.086827] iwlwifi 0000:02:00.0: loaded firmware version 25.228.9.0 op_mode iwlmvm
    [    4.098052] iwlwifi 0000:02:00.0: Detected Intel(R) Dual Band Wireless AC 7260, REV=0x144
    [    4.098133] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    [    4.098382] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    [    4.309693] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'
    [    4.317851] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    [    4.318097] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
    I will monitor the situation as I work today and report back.
    With thanks1
    Aridus

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