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Thread: No wifi after suspend (HP laptop, Ubuntu 11.04, Intel wireless)

  1. #1
    Join Date
    Jul 2011
    Beans
    18

    No wifi after suspend (HP laptop, Ubuntu 11.04, Intel wireless)

    I've searched around a bunch but haven't found a solution to my problem yet. My laptop won't connect to wireless internet upon waking from suspend. Networks are found, but the connection indicator just keeps flashing when it goes to connect to mine. Eventually it will ask for the network wpa password but won't connect even when it's provided. This is a bit of a dealbreaker because my laptop runs too hot to leave it on continuously and I keep too many programs open to turn it off and on all the time. (Hibernate does not work at all, incidentally.)

    Machine:
    HP dv7t quad edition laptop
    Intel quad core i7-2630QM 2.0 GHz
    8GB RAM

    Running:
    Ubuntu 11.04 64-bit in Classic Mode
    3.0.0-9-lowlatency (you may note below there's an audio interface connected)

    Sorry if there's too much info below; I'm not sure what to grep in all cases...

    lspci:

    Code:
    00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
    00:01.0 PCI bridge: Intel Corporation 2nd Generation Core Processor Family PCI Express Root Port (rev 09)
    00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
    00:16.0 Communication controller: Intel Corporation 6 Series Chipset Family MEI Controller #1 (rev 04)
    00:1a.0 USB Controller: Intel Corporation 6 Series Chipset Family USB Enhanced Host Controller #2 (rev 05)
    00:1b.0 Audio device: Intel Corporation 6 Series Chipset Family High Definition Audio Controller (rev 05)
    00:1c.0 PCI bridge: Intel Corporation 6 Series Chipset Family PCI Express Root Port 1 (rev b5)
    00:1c.1 PCI bridge: Intel Corporation 6 Series Chipset Family PCI Express Root Port 2 (rev b5)
    00:1c.2 PCI bridge: Intel Corporation 6 Series Chipset Family PCI Express Root Port 3 (rev b5)
    00:1c.3 PCI bridge: Intel Corporation 6 Series Chipset Family PCI Express Root Port 4 (rev b5)
    00:1d.0 USB Controller: Intel Corporation 6 Series Chipset Family USB Enhanced Host Controller #1 (rev 05)
    00:1f.0 ISA bridge: Intel Corporation HM65 Express Chipset Family LPC Controller (rev 05)
    00:1f.2 SATA controller: Intel Corporation 6 Series Chipset Family 6 port SATA AHCI Controller (rev 05)
    00:1f.3 SMBus: Intel Corporation 6 Series Chipset Family SMBus Controller (rev 05)
    01:00.0 VGA compatible controller: ATI Technologies Inc NI Seymour [AMD Radeon HD 6470M]
    07:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06)
    0d:00.0 Network controller: Intel Corporation Centrino Wireless-N 1000
    13:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. Device 5209 (rev 01)
    19:00.0 USB Controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 04)
    lsusb:

    Code:
    Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
    Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Bus 002 Device 003: ID 17cc:0815 Native Instruments Audio Kontrol 1
    Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
    Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Bus 001 Device 004: ID 064e:e258 Suyin Corp. 
    Bus 001 Device 003: ID 138a:0018 DigitalPersona, Inc 
    Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
    Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    ifconfig:

    Code:
    eth0      Link encap:Ethernet  HWaddr 2c:27:d7:ad:33:49  
              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:1000 
              RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
              Interrupt:41 Base address:0x8000 
    
    lo        Link encap:Local Loopback  
              inet addr:127.0.0.1  Mask:255.0.0.0
              inet6 addr: ::1/128 Scope:Host
              UP LOOPBACK RUNNING  MTU:16436  Metric:1
              RX packets:26255 errors:0 dropped:0 overruns:0 frame:0
              TX packets:26255 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:0 
              RX bytes:1790604 (1.7 MB)  TX bytes:1790604 (1.7 MB)
    
    wlan0     Link encap:Ethernet  HWaddr 8c:a9:82:97:69:00  
              inet addr:192.168.1.100  Bcast:192.168.1.255  Mask:255.255.255.0
              inet6 addr: fe80::8ea9:82ff:fe97:6900/64 Scope:Link
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              RX packets:1807555 errors:0 dropped:0 overruns:0 frame:0
              TX packets:1066172 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000 
              RX bytes:2672565091 (2.6 GB)  TX bytes:100649721 (100.6 MB)
    iwconfig:

    Code:
    wlan0     IEEE 802.11bgn  ESSID:"flux capacitor"  
              Mode:Managed  Frequency:2.437 GHz  Access Point: 00:12:17:1C:67:9F   
              Bit Rate=54 Mb/s   Tx-Power=14 dBm   
              Retry  long limit:7   RTS thr:off   Fragment thr:off
              Power Management:off
              Link Quality=60/70  Signal level=-50 dBm  
              Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
              Tx excessive retries:116  Invalid misc:8446   Missed beacon:0
    lsmod:

    Code:
    Module                  Size  Used by
    parport_pc             34915  0 
    ppdev                  16865  0 
    dm_crypt               22529  1 
    binfmt_misc            17083  1 
    vboxnetadp             13113  0 
    vboxnetflt             28052  0 
    vboxdrv               203938  2 vboxnetadp,vboxnetflt
    snd_hda_codec_hdmi     30621  1 
    snd_hda_codec_idt      62044  1 
    arc4                   12458  2 
    joydev                 17257  0 
    snd_usb_caiaq          39534  2 
    snd_hda_intel          30380  2 
    snd_hda_codec          85031  3 snd_hda_codec_hdmi,snd_hda_codec_idt,snd_hda_intel
    uvcvideo               70617  0 
    snd_hwdep              13150  1 snd_hda_codec
    videodev               78630  1 uvcvideo
    v4l2_compat_ioctl32    16842  1 videodev
    snd_pcm                83789  5 snd_hda_codec_hdmi,snd_usb_caiaq,snd_hda_intel,snd_hda_codec
    hp_wmi                 17390  0 
    sparse_keymap          12768  1 hp_wmi
    snd_seq_midi           12848  0 
    snd_rawmidi            27063  2 snd_usb_caiaq,snd_seq_midi
    snd_seq_midi_event     13316  1 snd_seq_midi
    snd_seq                57024  2 snd_seq_midi,snd_seq_midi_event
    snd_timer              26838  2 snd_pcm,snd_seq
    snd_seq_device         13097  3 snd_seq_midi,snd_rawmidi,snd_seq
    snd                    55939  18 snd_hda_codec_hdmi,snd_hda_codec_idt,snd_usb_caiaq,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
    psmouse                68222  0 
    serio_raw              12806  0 
    iwlagn                300211  0 
    mac80211              292050  1 iwlagn
    cfg80211              178156  2 iwlagn,mac80211
    rts_pstor             436265  0 
    soundcore              12432  1 snd
    snd_page_alloc         17110  2 snd_hda_intel,snd_pcm
    mei                    39963  0 
    hp_accel               21104  0 
    lis3lv02d              17855  1 hp_accel
    input_polldev          12906  1 lis3lv02d
    lp                     17104  0 
    parport                35862  3 parport_pc,ppdev,lp
    i915                  544029  2 
    radeon                997834  0 
    ttm                    60883  1 radeon
    drm_kms_helper         35393  2 i915,radeon
    drm                   195759  5 i915,radeon,ttm,drm_kms_helper
    ahci                   25186  3 
    r8169                  54531  0 
    libahci                26865  1 ahci
    xhci_hcd               81237  0 
    i2c_algo_bit           12879  2 i915,radeon
    wmi                    17410  1 hp_wmi
    video                  17969  1 i915
    dmesg | grep "iwlagn":

    Code:
    [   25.986476] iwlagn: Intel(R) Wireless WiFi Link AGN driver for Linux, in-tree:
    [   25.986479] iwlagn: Copyright(c) 2003-2011 Intel Corporation
    [   25.986538] iwlagn 0000:0d:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
    [   25.986548] iwlagn 0000:0d:00.0: setting latency timer to 64
    [   25.986580] iwlagn 0000:0d:00.0: Detected Intel(R) Centrino(R) Wireless-N 1000 BGN, REV=0x6C
    [   26.017599] iwlagn 0000:0d:00.0: device EEPROM VER=0x15d, CALIB=0x6
    [   26.017603] iwlagn 0000:0d:00.0: Device SKU: 0X9
    [   26.017606] iwlagn 0000:0d:00.0: Valid Tx ant: 0X1, Valid Rx ant: 0X3
    [   26.017616] iwlagn 0000:0d:00.0: Tunable channels: 13 802.11bg, 0 802.11a channels
    [   26.017713] iwlagn 0000:0d:00.0: irq 53 for MSI/MSI-X
    [   26.054254] iwlagn 0000:0d:00.0: loaded firmware version 39.31.5.1 build 35138
    sudo lshw -C network:

    Code:
      *-network               
           description: Ethernet interface
           product: RTL8111/8168B PCI Express Gigabit Ethernet controller
           vendor: Realtek Semiconductor Co., Ltd.
           physical id: 0
           bus info: pci@0000:07:00.0
           logical name: eth0
           version: 06
           serial: 2c:27:d7:ad:33:49
           size: 10Mbit/s
           capacity: 1Gbit/s
           width: 64 bits
           clock: 33MHz
           capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
           configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=N/A latency=0 link=no multicast=yes port=MII speed=10Mbit/s
           resources: irq:41 ioport:4000(size=256) memory:c0404000-c0404fff memory:c0400000-c0403fff
      *-network
           description: Wireless interface
           product: Centrino Wireless-N 1000
           vendor: Intel Corporation
           physical id: 0
           bus info: pci@0000:0d:00.0
           logical name: wlan0
           version: 00
           serial: 8c:a9:82:97:69:00
           width: 64 bits
           clock: 33MHz
           capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
           configuration: broadcast=yes driver=iwlagn driverversion=3.0.0-9-lowlatency firmware=39.31.5.1 build 35138 ip=192.168.1.100 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn
           resources: irq:53 memory:c4500000-c4501fff
    iwlist scan:

    Code:
    wlan0     Scan completed :
              Cell 01 - Address: 00:12:17:1C:67:9F
                        Channel:6
                        Frequency:2.437 GHz (Channel 6)
                        Quality=67/70  Signal level=-43 dBm  
                        Encryption key:on
                        ESSID:"flux capacitor"
                        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=0000005978742dc3
                        Extra: Last beacon: 63225ms ago
                        IE: Unknown: 000E666C757820636170616369746F72
                        IE: Unknown: 010882848B9624B0486C
                        IE: Unknown: 030106
                        IE: Unknown: 2A0100
                        IE: Unknown: 2F0100
                        IE: Unknown: 32048C129860
                        IE: Unknown: DD06001018020004
                        IE: WPA Version 1
                            Group Cipher : CCMP
                            Pairwise Ciphers (1) : CCMP
                            Authentication Suites (1) : PSK
    sudo /etc/init.d/networking restart:

    Code:
     * Running /etc/init.d/networking restart is deprecated because it may not enable again some interfaces
     * Reconfiguring network interfaces...                                          
    Ignoring unknown interface wlan0=wlan0.

  2. #2
    Join Date
    Jul 2011
    Beans
    18

    Re: No wifi after suspend (HP laptop, Ubuntu 11.04, Intel wireless)

    Bump. Anybody got anything for me?

  3. #3
    Join Date
    Jul 2011
    Beans
    18

    Re: No wifi after suspend (HP laptop, Ubuntu 11.04, Intel wireless)

    I've tried everything I can find on the web to fix this problem and nothing has worked. I was hoping it might magically get solved by 11.10 but no such luck.

    I'm going to try a couple of other distributions and see if that fixes it. If not, I guess it's back to Windows. I can't run a laptop without a suspend function, end of story.

  4. #4
    Join Date
    Oct 2006
    Beans
    Hidden!

    Re: No wifi after suspend (HP laptop, Ubuntu 11.04, Intel wireless)

    Quote Originally Posted by psycho_killer View Post
    I've tried everything I can find on the web to fix this problem and nothing has worked. I was hoping it might magically get solved by 11.10 but no such luck.

    I'm going to try a couple of other distributions and see if that fixes it. If not, I guess it's back to Windows. I can't run a laptop without a suspend function, end of story.
    I have the same problem, same Intel wireless.
    I have spend many hours on this with no solution.
    It is no longer worth the effort, back to Windows after five years with Ubuntu.
    NAH40

  5. #5
    Join Date
    May 2009
    Beans
    2

    Re: No wifi after suspend (HP laptop, Ubuntu 11.04, Intel wireless)

    Let's see...
    No support for the fingerprint reader.
    No resume after suspend for the intel wireless 1000
    If screen is turned off by power system the screen won't turn back on.
    Can't use the ATI graphics card without the system locking up.

    I'm really regretting buying this new HP laptop.

    I REALLY hate to say I may have to join the windows crowd on this one and I've been exclusive Linux since 1993!!!!!!!

    Seems Ubuntu 11.10 is very prematurely release. I've found WAY too many show stoppers. Sighhhhhh....

  6. #6
    Join Date
    Jul 2011
    Beans
    18

    Re: No wifi after suspend (HP laptop, Ubuntu 11.04, Intel wireless)

    Quote Originally Posted by rommer View Post
    No support for the fingerprint reader.
    No resume after suspend for the intel wireless 1000
    If screen is turned off by power system the screen won't turn back on.
    Can't use the ATI graphics card without the system locking up.

    I'm really regretting buying this new HP laptop.
    Yup, I've had every single one of those problems. I still like the laptop, though...

  7. #7
    Join Date
    Feb 2011
    Beans
    12
    Distro
    Ubuntu 11.04 Natty Narwhal

    Re: No wifi after suspend (HP laptop, Ubuntu 11.04, Intel wireless)

    Anyone found a solution for the suspend thing? That's the only issue I have with hp dv6t with basically the same specs. I'm going to try the zen kernel, compiling now. I've had 2 distros where it's worked, and they were both old kernels with barely any sandy bridge support. I'm really thinking it's kernel related...

  8. #8
    Join Date
    Oct 2011
    Beans
    9

    Re: No wifi after suspend (HP laptop, Ubuntu 11.04, Intel wireless)

    Did anyone try this solution?
    I have the same problem and don't have the time to try this out but it doesnt look like a bad workaround. I'm linking to the article and quoting it as well to save you the hassle of having to click the link if you don't want to.

    Link: http://fooninja.net/2010/09/02/how-t...ume-in-ubuntu/

    Quoted:
    Problem: After suspending and then resuming my Thinkpad X61s running Ubuntu 10.04 (Lucid), the wireless would no longer work. Networks were detected but I couldn't connect - nothing happened. The wifi card is an "Intel PRO/Wireless 4965 AG or AGN", according to lspci. (I had the same problem with Ubuntu 9.10 (Karmic)).

    Solution: I still don't know the cause, but restarting networking and unloading/reloading the module for the wireless interface fixed the problem.

    Code:
    #!/bin/sh
    # Stop networking and network-manager
    stop network-manager
    service networking stop
    
    # Remove and reload the module for the wifi card
    # (replace iwlagn with your own if you have a different one)
    modprobe -r -f iwlagn
    modprobe iwlagn
    
    # Start networking and network-manager again
    service networking start
    start network-manager
    Save the file as fixwifi.sh, run chmod +x fixwifi.sh and run it as root. Voila! (Hopefully.)

    To make things smoother, if you always have this problem after resuming, you can have the script run automatically after resume. In earlier versions of Ubuntu you would put the script in /etc/acpi/resume.d. This has changed with 10.04 Lucid. You now have to put the script in /etc/pm/sleep.d, but you will have to make some modifications. After looking at the scripts in /usr/lib/pm-utils/sleep.d for guidance, I came up with the following:

    Code:
    #!/bin/sh
    
    . "${PM_FUNCTIONS}"
    
    resume_wifi()
    {
            # Stop networking and network-manager
            stop network-manager
            service networking stop
    
            # Remove and reload the module for the wifi card
            modprobe -r -f iwlagn
            modprobe iwlagn
    
            # Start networking and network-manager again
            service networking start
            start network-manager
    }
    
    case "$1" in
            thaw|resume)
                    resume_wifi
                    ;;
            *) exit $NA
                    ;;
    esac
    Save the file as 99fixwifi.sh, put it in /etc/pm/sleep.d and make it executable (chmod +x 99fixwifi.sh). Crude? Yes, but it works for me. If you have a nicer solution, let me know!

  9. #9
    Join Date
    Jul 2011
    Beans
    18

    Re: No wifi after suspend (HP laptop, Ubuntu 11.04, Intel wireless)

    Quote Originally Posted by mattzab View Post
    Did anyone try this solution?
    I have the same problem and don't have the time to try this out but it doesnt look like a bad workaround. I'm linking to the article and quoting it as well to save you the hassle of having to click the link if you don't want to.

    Link: http://fooninja.net/2010/09/02/how-t...ume-in-ubuntu/

    Quoted:
    Yeah, that never worked for me. Actually, with the latest kernels, Ubuntu doesn't even suspend at all on my computer. An older kernel ameliorates the wifi problem but causes a bunch of new ones, so I don't think there's a good fix yet.

  10. #10
    Join Date
    Feb 2011
    Beans
    12
    Distro
    Ubuntu 11.04 Natty Narwhal

    Re: No wifi after suspend (HP laptop, Ubuntu 11.04, Intel wireless)

    Quote Originally Posted by psycho_killer View Post
    Yeah, that never worked for me. Actually, with the latest kernels, Ubuntu doesn't even suspend at all on my computer. An older kernel ameliorates the wifi problem but causes a bunch of new ones, so I don't think there's a good fix yet.
    EXACTLY!!! And it's killing me! All I want to be able to do is shut my lid to suspend, open it, and have wireless networking work! I'm growing tired of this issue not being fixed. I've tried zen kernel, I'm currently on kernel 3.2 rc7 and still no dice

    Not quite sure where to go from here...

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