Wi-Fi Intel связывает 5100 AGN, не работающие в 14,04

Моим ноутбуком является Thinkpas T400 с внутренней ссылкой Wi-Fi Intel 5100 AGN. Мое беспроводное соединение становится потерянным через некоторое время начиная с каждой перезагрузки. Это происходит и в моих текущих 64-разрядных 14.04 и в предыдущих 32-разрядных 12.04. (В 14,04, иногда также не работает мой адаптер Ethernet.)

Я нашел некоторые обсуждения путем поиска с помощью Google "Wi-Fi Intel 5100 Ubuntu AGN", и они пробовали разные подходы, не решая проблему.

Я отправил свой вывод dmesg здесь для моего беспроводного адаптера wlan0 и его драйвер iwlwifi, и надежда на некоторую справку.

$ dmesg | grep wlan0

[   22.680318] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[   29.424514] wlan0: authenticate with 00:25:9c:1b:57:21
[   29.427265] wlan0: send auth to 00:25:9c:1b:57:21 (try 1/3)
[   29.429960] wlan0: authenticated
[   29.430048] iwlwifi 0000:03:00.0 wlan0: disabling HT as WMM/QoS is not supported by the AP
[   29.430051] iwlwifi 0000:03:00.0 wlan0: disabling VHT as WMM/QoS is not supported by the AP
[   29.432078] wlan0: associate with 00:25:9c:1b:57:21 (try 1/3)
[   29.434535] wlan0: RX AssocResp from 00:25:9c:1b:57:21 (capab=0x411 status=0 aid=5)
[   29.437742] wlan0: associated
[   29.437771] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[   30.444281] wlan0: deauthenticating from 00:25:9c:1b:57:21 by local choice (Reason: 2=PREV_AUTH_NOT_VALID)
[   30.446133] wlan0: authenticate with 00:25:9c:1b:57:21
[   30.446981] wlan0: send auth to 00:25:9c:1b:57:21 (try 1/3)
[   30.449875] wlan0: authenticated
[   30.450038] iwlwifi 0000:03:00.0 wlan0: disabling HT as WMM/QoS is not supported by the AP
[   30.450041] iwlwifi 0000:03:00.0 wlan0: disabling VHT as WMM/QoS is not supported by the AP
[   30.452151] wlan0: associate with 00:25:9c:1b:57:21 (try 1/3)
[   30.454658] wlan0: RX AssocResp from 00:25:9c:1b:57:21 (capab=0x411 status=0 aid=5)
[   30.457904] wlan0: associated
[ 5120.374230] wlan0: deauthenticated from 00:25:9c:1b:57:21 (Reason: 7=CLASS3_FRAME_FROM_NONASSOC_STA)
[ 5123.676199] wlan0: authenticate with 00:25:9c:1b:57:21
[ 5123.677937] wlan0: send auth to 00:25:9c:1b:57:21 (try 1/3)
[ 5123.680496] wlan0: authenticated
[ 5123.680754] iwlwifi 0000:03:00.0 wlan0: disabling HT as WMM/QoS is not supported by the AP
[ 5123.680763] iwlwifi 0000:03:00.0 wlan0: disabling VHT as WMM/QoS is not supported by the AP
[ 5123.684315] wlan0: associate with 00:25:9c:1b:57:21 (try 1/3)
[ 5123.688858] wlan0: RX AssocResp from 00:25:9c:1b:57:21 (capab=0x411 status=0 aid=5)
[ 5123.691922] wlan0: associated
[16757.341736] wlan0: deauthenticated from 00:25:9c:1b:57:21 (Reason: 7=CLASS3_FRAME_FROM_NONASSOC_STA)
[16757.380215] wlan0: authenticate with 00:25:9c:1b:57:21
[16757.386911] wlan0: send auth to 00:25:9c:1b:57:21 (try 1/3)
[16757.391132] wlan0: authenticated
[16757.391424] iwlwifi 0000:03:00.0 wlan0: disabling HT as WMM/QoS is not supported by the AP
[16757.391433] iwlwifi 0000:03:00.0 wlan0: disabling VHT as WMM/QoS is not supported by the AP
[16757.392110] wlan0: associate with 00:25:9c:1b:57:21 (try 1/3)
[16757.395611] wlan0: RX AssocResp from 00:25:9c:1b:57:21 (capab=0x411 status=0 aid=2)
[16757.397671] wlan0: associated
[21321.548607] wlan0: deauthenticated from 00:25:9c:1b:57:21 (Reason: 7=CLASS3_FRAME_FROM_NONASSOC_STA)


$ dmesg | grep iwl 

[   13.916985] iwlwifi 0000:03:00.0: can't disable ASPM; OS doesn't have ASPM control
[   13.917156] iwlwifi 0000:03:00.0: irq 50 for MSI/MSI-X
[   13.959583] iwlwifi 0000:03:00.0: loaded firmware version 8.83.5.1 build 33692 op_mode iwldvm
[   14.475382] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEBUG disabled
[   14.475386] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEBUGFS enabled
[   14.475387] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEVICE_TRACING enabled
[   14.475389] iwlwifi 0000:03:00.0: Detected Intel(R) WiFi Link 5100 AGN, REV=0x54
[   14.475454] iwlwifi 0000:03:00.0: L1 Disabled - LTR Disabled
[   14.500372] ieee80211 phy0: Selected rate control algorithm 'iwl-agn-rs'
[   22.554089] iwlwifi 0000:03:00.0: L1 Disabled - LTR Disabled
[   22.554494] iwlwifi 0000:03:00.0: Radio type=0x1-0x2-0x0
[   22.651233] iwlwifi 0000:03:00.0: L1 Disabled - LTR Disabled
[   22.651625] iwlwifi 0000:03:00.0: Radio type=0x1-0x2-0x0
[   29.430048] iwlwifi 0000:03:00.0 wlan0: disabling HT as WMM/QoS is not supported by the AP
[   29.430051] iwlwifi 0000:03:00.0 wlan0: disabling VHT as WMM/QoS is not supported by the AP
[   30.450038] iwlwifi 0000:03:00.0 wlan0: disabling HT as WMM/QoS is not supported by the AP
[   30.450041] iwlwifi 0000:03:00.0 wlan0: disabling VHT as WMM/QoS is not supported by the AP
[ 5123.680754] iwlwifi 0000:03:00.0 wlan0: disabling HT as WMM/QoS is not supported by the AP
[ 5123.680763] iwlwifi 0000:03:00.0 wlan0: disabling VHT as WMM/QoS is not supported by the AP
[16757.391424] iwlwifi 0000:03:00.0 wlan0: disabling HT as WMM/QoS is not supported by the AP
[16757.391433] iwlwifi 0000:03:00.0 wlan0: disabling VHT as WMM/QoS is not supported by the AP

$ ifconfig

eth0      Link encap:Ethernet  HWaddr 00:24:7e:e0:62:50  
          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:20 Memory:fc600000-fc620000 

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:65536  Metric:1
          RX packets:37304 errors:0 dropped:0 overruns:0 frame:0
          TX packets:37304 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:3623278 (3.6 MB)  TX bytes:3623278 (3.6 MB)

wlan0     Link encap:Ethernet  HWaddr 00:26:c6:3e:30:34  
          inet addr:192.168.1.100  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::226:c6ff:fe3e:3034/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:102840 errors:0 dropped:0 overruns:0 frame:0
          TX packets:96036 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:78001233 (78.0 MB)  TX bytes:16544959 (16.5 MB)


$ lshw -C network
WARNING: you should run this program as super-user.
  *-network               
       description: Ethernet interface
       product: 82567LM Gigabit Network Connection
       vendor: Intel Corporation
       physical id: 19
       bus info: pci@0000:00:19.0
       logical name: eth0
       version: 03
       serial: 00:24:7e:e0:62:50
       capacity: 1Gbit/s
       width: 32 bits
       clock: 33MHz
       capabilities: bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=2.3.2-k firmware=1.8-3 latency=0 link=no multicast=yes port=twisted pair
       resources: irq:45 memory:fc600000-fc61ffff memory:fc625000-fc625fff ioport:1840(size=32)
  *-network
       description: Wireless interface
       product: PRO/Wireless 5100 AGN [Shiloh] Network Connection
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: wlan0
       version: 00
       serial: 00:26:c6:3e:30:34
       width: 64 bits
       clock: 33MHz
       capabilities: bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=3.16.0-31-generic firmware=8.83.5.1 build 33692 ip=192.168.1.100 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn
       resources: irq:50 memory:f4200000-f4201fff