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Thread: 12.10 periodic wireless dropouts after update

  1. #1
    Join Date
    Oct 2008
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    23

    12.10 periodic wireless dropouts after update

    Newly installed 12.10. Seemed to work find at first, now I am experiencing wireless drops from time to time. I disconnect from the service and then reconnect. This seems to work for a while and then the problem comes up again. Acer Aspire laptop 5742-7120.

    Has worked fine since ubuntu 10.10 on this laptop.

  2. #2
    Join Date
    Aug 2011
    Location
    Berlin, Germany
    Beans
    5,442
    Distro
    Xubuntu 12.04 Precise Pangolin

    Re: 12.10 periodic wireless dropouts after update

    Hi,

    please show:
    Code:
    lspci -nnk | grep -iA2 net
    lsusb
    lsmod
    iwconfig
    sudo iwlist scan
    Tried pure WPA2-AES (CCMP) encryption? Fixed channel?

  3. #3
    Join Date
    Oct 2008
    Beans
    23

    Re: 12.10 periodic wireless dropouts after update

    Hi praseodym:
    Thanks for the reply. Here are the answers to your queries:

    lspci -nnk | grep -iA2 net

    01:00.0 Ethernet controller [0200]: Broadcom Corporation NetLink BCM57780 Gigabit Ethernet PCIe [14e4:1692] (rev 01)
    Subsystem: Acer Incorporated [ALI] Device [1025:036d]
    Kernel driver in use: tg3
    --
    02:00.0 Network controller [0280]: Broadcom Corporation BCM43225 802.11b/g/n [14e4:4357] (rev 01)
    Subsystem: Foxconn International, Inc. T77H103.00 Wireless Half-size Mini PCIe Card [105b:e021]
    Kernel driver in use: bcma-pci-bridge

    lsusb
    Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
    Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
    Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Bus 001 Device 003: ID 064e:a219 Suyin Corp. 1.3M WebCam (notebook emachines E730, Acer sub-brand)
    Bus 002 Device 005: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB
    Bus 002 Device 006: ID 046d:c045 Logitech, Inc. Optical Mouse

    lsmod
    Module Size Used by
    snd_hda_codec_hdmi 32049 1
    snd_hda_codec_realtek 78048 1
    parport_pc 32689 0
    ppdev 17074 0
    bnep 18141 2
    rfcomm 46620 0
    bluetooth 209249 10 bnep,rfcomm
    coretemp 13401 0
    kvm_intel 132760 0
    kvm 414071 1 kvm_intel
    arc4 12530 2
    brcmsmac 531905 0
    mac80211 539958 1 brcmsmac
    brcmutil 14756 1 brcmsmac
    cfg80211 206797 2 brcmsmac,mac80211
    cordic 12575 1 brcmsmac
    snd_hda_intel 33492 5
    snd_hda_codec 134213 3 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_i ntel
    snd_hwdep 17699 1 snd_hda_codec
    snd_pcm 96668 4 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec
    microcode 22804 0
    snd_seq_midi 13325 0
    snd_rawmidi 30513 1 snd_seq_midi
    snd_seq_midi_event 14900 1 snd_seq_midi
    snd_seq 61555 2 snd_seq_midi,snd_seq_midi_event
    uvcvideo 76750 0
    videobuf2_core 32852 1 uvcvideo
    snd_timer 29426 2 snd_pcm,snd_seq
    videodev 120310 2 uvcvideo,videobuf2_core
    snd_seq_device 14498 3 snd_seq_midi,snd_rawmidi,snd_seq
    videobuf2_vmalloc 12861 1 uvcvideo
    videobuf2_memops 13405 1 videobuf2_vmalloc
    psmouse 95595 0
    serio_raw 13216 0
    intel_ips 18244 0
    lpc_ich 17062 0
    snd 78921 19 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_i ntel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,s nd_seq,snd_timer,snd_seq_device
    bcma 35657 1 brcmsmac
    soundcore 15048 1 snd
    i915 520621 8
    mei 40691 0
    snd_page_alloc 18485 2 snd_hda_intel,snd_pcm
    drm_kms_helper 49113 1 i915
    drm 288721 4 i915,drm_kms_helper
    i2c_algo_bit 13414 1 i915
    joydev 17458 0
    acer_wmi 32454 0
    sparse_keymap 13891 1 acer_wmi
    mxm_wmi 13022 0
    video 19336 2 i915,acer_wmi
    mac_hid 13206 0
    wmi 19071 2 acer_wmi,mxm_wmi
    lp 17760 0
    parport 46346 3 parport_pc,ppdev,lp
    ums_realtek 17950 0
    uas 17845 0
    tg3 148781 0
    hid_generic 12541 0
    usbhid 46987 0
    hid 100411 2 hid_generic,usbhid
    usb_storage 48839 1 ums_realtek

    iwconfig
    eth0 no wireless extensions.

    lo no wireless extensions.

    wlan0 IEEE 802.11bgn ESSID:"Puppy"
    Mode:Managed Frequency:2.462 GHz Access Point: B2:B2C:7E:FC:48
    Bit Rate=104 Mb/s Tx-Power=27 dBm
    Retry long limit:7 RTS thrff Fragment thrff
    Power Managementff
    Link Quality=55/70 Signal level=-55 dBm
    Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
    Tx excessive retries:5 Invalid misc:42 Missed beacon:0

  4. #4
    Join Date
    Oct 2008
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    23

    Re: 12.10 periodic wireless dropouts after update

    Oh, and here is the last terminal command:

    sudo iwlist scan

    eth0 Interface doesn't support scanning.

    lo Interface doesn't support scanning.

    wlan0 Scan completed :
    Cell 01 - Address: B2:B2C:7E:FC:48
    Channel:11
    Frequency:2.462 GHz (Channel 11)
    Quality=55/70 Signal level=-55 dBm
    Encryption keyn
    ESSID:"Puppy"
    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 9 Mb/s
    18 Mb/s; 36 Mb/s; 54 Mb/s
    Bit Rates:6 Mb/s; 12 Mb/s; 24 Mb/s; 48 Mb/s
    Mode:Master
    Extra:tsf=000000bcd6b98150
    Extra: Last beacon: 84ms ago
    IE: Unknown: 00055075707079
    IE: Unknown: 010882848B961224486C
    IE: Unknown: 03010B
    IE: Unknown: 2A0104
    IE: Unknown: 32040C183060
    IE: Unknown: 2D1AEE1117FFFF000001000000000000000000000000000000 000000
    IE: Unknown: 3D160B070500000000000000000000000000000000000000
    IE: Unknown: 3E0100
    IE: WPA Version 1
    Group Cipher : TKIP
    Pairwise Ciphers (2) : TKIP CCMP
    Authentication Suites (1) : PSK
    IE: IEEE 802.11i/WPA2 Version 1
    Group Cipher : TKIP
    Pairwise Ciphers (2) : TKIP CCMP
    Authentication Suites (1) : PSK
    IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F 00
    IE: Unknown: 0B05090059127A
    IE: Unknown: 4A0E14000A002C01C800140005001900
    IE: Unknown: 7F0101
    IE: Unknown: DD07000C4300000000
    IE: Unknown: 0706555320010B10
    IE: Unknown: DDA50050F204104A0001101044000102103B00010310470010 BC329E001DD811B28601B2B2DC7EFC48102100175A7958454C 20546563686E6F6C6F67792C20436F72702E1023001B5A7958 454C20576972656C6573732041636365737320506F696E7410 24000652543238363010420008313233343536373810540008 00060050F2040001101100095A7958454C2041505310080002 210C103C0001011049000600372A000120
    Cell 02 - Address: 00:00:00:00:00:00
    Channel:1
    Frequency:2.412 GHz (Channel 1)
    Quality=19/70 Signal level=-91 dBm
    Encryption keyn
    ESSID:""
    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 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=00000015b578825e
    Extra: Last beacon: 832ms ago
    IE: Unknown: 0000
    IE: Unknown: 010482848B96
    IE: Unknown: 030101
    IE: Unknown: 050C000300000000000000000000
    IE: Unknown: 2A0104
    IE: Unknown: 32080C1218243048606C
    Cell 03 - Address: 40:8B:07:A8:43:54
    Channel:1
    Frequency:2.412 GHz (Channel 1)
    Quality=25/70 Signal level=-85 dBm
    Encryption keyn
    ESSID:"LovePotionNumber9"
    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=000000404fb1d7d9
    Extra: Last beacon: 820ms ago
    IE: Unknown: 00114C6F7665506F74696F6E4E756D62657239
    IE: Unknown: 010882848B962430486C
    IE: Unknown: 030101
    IE: Unknown: 0706555320010B1E
    IE: Unknown: 200100
    IE: Unknown: 23021100
    IE: Unknown: 2A0104
    IE: Unknown: 2F0104
    IE: IEEE 802.11i/WPA2 Version 1
    Group Cipher : TKIP
    Pairwise Ciphers (2) : CCMP TKIP
    Authentication Suites (1) : PSK
    IE: Unknown: 32040C121860
    IE: Unknown: 2D1AFC191BFFFF000000000000000000000000000000000000 000000
    IE: Unknown: 3D1601001700000000000000000000000000000000000000
    IE: Unknown: DD800050F204104A0001101044000102103B00010310470010 A45AE9D591689B80BA45B3FC18489AD91021000842726F6164 636F6D1023000842726F6164636F6D10240006313233343536 10420004313233341054000800060050F20400011011000A42 726F6164636F6D415010080002200C103C0001011049000600 372A000120
    IE: Unknown: DD090010180202F02C0000
    IE: WPA Version 1
    Group Cipher : TKIP
    Pairwise Ciphers (2) : CCMP TKIP
    Authentication Suites (1) : PSK
    IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F 00
    Cell 04 - Address: 50:67:F0:EF:7D:9B
    Channel:1
    Frequency:2.412 GHz (Channel 1)
    Quality=22/70 Signal level=-88 dBm
    Encryption keyn
    ESSID:"shakendake"
    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 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=0000004bd38e8c04
    Extra: Last beacon: 820ms ago
    IE: Unknown: 000A7368616B656E64616B65
    IE: Unknown: 010482848B96
    IE: Unknown: 030101
    IE: Unknown: 2A0100
    IE: IEEE 802.11i/WPA2 Version 1
    Group Cipher : TKIP
    Pairwise Ciphers (2) : CCMP TKIP
    Authentication Suites (1) : PSK
    IE: Unknown: 32080C1218243048606C
    IE: WPA Version 1
    Group Cipher : TKIP
    Pairwise Ciphers (2) : CCMP TKIP
    Authentication Suites (1) : PSK
    IE: Unknown: DD7A0050F204104A0001101044000102103B00010310470010 555555550000C0A800015067F0EF7D9B102100055A7958454C 1023000F5A7958454C2057464144657669636510240007504B 353030305A1042000830303030303030311054000800060050 F20400011011000A504B353030305A20415010080002008C
    Cell 05 - Address: 00:24:7B:A4:3A:1E
    Channel:1
    Frequency:2.412 GHz (Channel 1)
    Quality=19/70 Signal level=-91 dBm
    Encryption keyn
    ESSID:"myqwest2781"
    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 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=00000015b578824a
    Extra: Last beacon: 812ms ago
    IE: Unknown: 000B6D79717765737432373831
    IE: Unknown: 010482848B96
    IE: Unknown: 030101
    IE: Unknown: 050C000300000000000000000000
    IE: Unknown: 2A0104
    IE: IEEE 802.11i/WPA2 Version 1
    Group Cipher : TKIP
    Pairwise Ciphers (1) : CCMP
    Authentication Suites (1) : PSK
    IE: Unknown: 32080C1218243048606C
    IE: WPA Version 1
    Group Cipher : TKIP
    Pairwise Ciphers (1) : TKIP
    Authentication Suites (1) : PSK
    IE: Unknown: DD0E0050F204104A0001101044000102
    Cell 06 - Address: 00:1D:CD:E5:4E:86
    Channel:9
    Frequency:2.452 GHz (Channel 9)
    Quality=33/70 Signal level=-77 dBm
    Encryption keyn
    ESSID:"ARRIS-4E88"
    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 9

  5. #5
    Join Date
    Oct 2008
    Beans
    23

    Re: 12.10 periodic wireless dropouts after update

    With the final bit here:

    Mb/s
    18 Mb/s; 36 Mb/s; 54 Mb/s
    Bit Rates:6 Mb/s; 12 Mb/s; 24 Mb/s; 48 Mb/s
    Mode:Master
    Extra:tsf=000000b98db3f150
    Extra: Last beacon: 332ms ago
    IE: Unknown: 000A41525249532D34453838
    IE: Unknown: 010882848B961224486C
    IE: Unknown: 030109
    IE: Unknown: 32040C183060
    IE: Unknown: 070C5553200101110209140B0111
    IE: Unknown: 33082001020304050607
    IE: Unknown: 33082105060708090A0B
    IE: Unknown: 050400010000
    IE: Unknown: 2A0104
    IE: WPA Version 1
    Group Cipher : TKIP
    Pairwise Ciphers (1) : TKIP
    Authentication Suites (1) : PSK
    IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F 00
    IE: Unknown: 0B05030018127A
    IE: Unknown: DD07000C4307000000
    Cell 07 - Address: 84:4B:F5:38:F9:10
    Channel:11
    Frequency:2.462 GHz (Channel 11)
    Quality=37/70 Signal level=-73 dBm
    Encryption keyff
    ESSID:"HP-Print-10-LaserJet 1102"
    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=00000003192eb39c
    Extra: Last beacon: 40ms ago
    IE: Unknown: 001948502D5072696E742D31302D4C617365724A6574203131 3032
    IE: Unknown: 01088C1218243048606C
    IE: Unknown: 03010B
    IE: Unknown: 050400010000
    IE: Unknown: 2A0100
    IE: Unknown: DD180050F2020101810027A4000003A4000042435E0062322F 00
    Cell 08 - Address: 00:24:7B:A8:09:00
    Channel:11
    Frequency:2.462 GHz (Channel 11)
    Quality=20/70 Signal level=-90 dBm
    Encryption keyn
    ESSID:"myqwest2351"
    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 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=00000000f9d2b24d
    Extra: Last beacon: 240ms ago
    IE: Unknown: 000B6D79717765737432333531
    IE: Unknown: 010482848B96
    IE: Unknown: 03010B
    IE: Unknown: 050C010300000000000000000000
    IE: Unknown: 2A0104
    IE: IEEE 802.11i/WPA2 Version 1
    Group Cipher : TKIP
    Pairwise Ciphers (1) : CCMP
    Authentication Suites (1) : PSK
    IE: Unknown: 32080C1218243048606C
    IE: WPA Version 1
    Group Cipher : TKIP
    Pairwise Ciphers (1) : TKIP
    Authentication Suites (1) : PSK
    IE: Unknown: DD0E0050F204104A0001101044000102

  6. #6
    Join Date
    Aug 2011
    Location
    Berlin, Germany
    Beans
    5,442
    Distro
    Xubuntu 12.04 Precise Pangolin

    Re: 12.10 periodic wireless dropouts after update

    Change the encryption mode to WPA2-AES only and to a fixed channel

  7. #7
    Join Date
    Oct 2008
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    23

    Re: 12.10 periodic wireless dropouts after update

    Quote Originally Posted by praseodym View Post
    Change the encryption mode to WPA2-AES only and to a fixed channel
    I am using the 'Network' interface app. I cannot find the options you suggested. My current selection is: WPA & WPA2 Personal.

  8. #8
    Join Date
    Aug 2011
    Location
    Berlin, Germany
    Beans
    5,442
    Distro
    Xubuntu 12.04 Precise Pangolin

    Re: 12.10 periodic wireless dropouts after update

    You need to change it in your router interface, check the manual for it.

  9. #9
    Join Date
    Oct 2008
    Beans
    23

    Re: 12.10 periodic wireless dropouts after update

    Quote Originally Posted by praseodym View Post
    You need to change it in your router interface, check the manual for it.
    Well, I changed the encryption from AES & TKIP to just AES. I'll let you know how that works. There a about 7 other devices connecting via this router, so we shall see if there are any other problems.

  10. #10
    Join Date
    Oct 2008
    Beans
    23

    Re: 12.10 periodic wireless dropouts after update

    It still drops the wireless connection, although perhaps not as frequently. What puzzles me is that I can use the mouse to disconnect and then reconnect to the network. Isn't it possible for my computer to detect a problem and reconnect automatically?

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