С непонятной периодичностью, но стабильно не меньше двух раз в день крешится модуль iwlwifi.
В dmesg такая вот простыня:
[249055.316852] wlan0: deauthenticated from 00:1d:73:b1:0a:b1 (Reason: 7)
[249055.373866] cfg80211: Calling CRDA to update world regulatory domain
[249055.376688] cfg80211: World regulatory domain updated:
[249055.376692] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[249055.376695] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[249055.376698] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[249055.376700] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[249055.376702] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[249055.376704] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[249055.385243] wlan0: authenticate with 00:1d:73:b1:0a:b1
[249055.386246] wlan0: send auth to 00:1d:73:b1:0a:b1 (try 1/3)
[249055.388426] wlan0: authenticated
[249055.389335] wlan0: associate with 00:1d:73:b1:0a:b1 (try 1/3)
[249055.392904] wlan0: RX AssocResp from 00:1d:73:b1:0a:b1 (capab=0x411 status=0 aid=1)
[249055.395430] wlan0: associated
[249101.376949] iwlwifi 0000:09:00.0: fail to flush all tx fifo queues Q 2
[249101.376960] iwlwifi 0000:09:00.0: Current SW read_ptr 4 write_ptr 19
[249101.377018] iwl data: 00000000: f0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
[249101.377058] iwlwifi 0000:09:00.0: FH TRBs(0) = 0x80003087
[249101.377100] iwlwifi 0000:09:00.0: FH TRBs(1) = 0x80102007
[249101.377147] iwlwifi 0000:09:00.0: FH TRBs(2) = 0x802010b3
[249101.377187] iwlwifi 0000:09:00.0: FH TRBs(3) = 0x80300031
[249101.377235] iwlwifi 0000:09:00.0: FH TRBs(4) = 0x00000000
[249101.377275] iwlwifi 0000:09:00.0: FH TRBs(5) = 0x00000000
[249101.377323] iwlwifi 0000:09:00.0: FH TRBs(6) = 0x00000000
[249101.377363] iwlwifi 0000:09:00.0: FH TRBs(7) = 0x0070409b
[249101.377544] iwlwifi 0000:09:00.0: Q 0 is active and mapped to fifo 3 ra_tid 0x0000 [50,50]
[249101.377638] iwlwifi 0000:09:00.0: Q 1 is active and mapped to fifo 2 ra_tid 0x0000 [180,180]
[249101.377732] iwlwifi 0000:09:00.0: Q 2 is active and mapped to fifo 1 ra_tid 0x0000 [4,19]
[249101.377827] iwlwifi 0000:09:00.0: Q 3 is active and mapped to fifo 0 ra_tid 0x0000 [136,136]
[249101.377993] iwlwifi 0000:09:00.0: Q 4 is active and mapped to fifo 7 ra_tid 0x0000 [156,156]
[249101.378085] iwlwifi 0000:09:00.0: Q 5 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[249101.378260] iwlwifi 0000:09:00.0: Q 6 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[249101.378456] iwlwifi 0000:09:00.0: Q 7 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[249101.378548] iwlwifi 0000:09:00.0: Q 8 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[249101.378728] iwlwifi 0000:09:00.0: Q 9 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[249101.378820] iwlwifi 0000:09:00.0: Q 10 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[249101.379021] iwlwifi 0000:09:00.0: Q 11 is inactive and mapped to fifo 1 ra_tid 0x0000 [245,245]
[249101.379114] iwlwifi 0000:09:00.0: Q 12 is inactive and mapped to fifo 0 ra_tid 0x0002 [10,10]
[249101.379294] iwlwifi 0000:09:00.0: Q 13 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[249101.379386] iwlwifi 0000:09:00.0: Q 14 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[249101.379567] iwlwifi 0000:09:00.0: Q 15 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[249101.379660] iwlwifi 0000:09:00.0: Q 16 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[249101.379840] iwlwifi 0000:09:00.0: Q 17 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[249101.380017] iwlwifi 0000:09:00.0: Q 18 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[249101.380110] iwlwifi 0000:09:00.0: Q 19 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[249103.396020] iwlwifi 0000:09:00.0: fail to flush all tx fifo queues Q 2
[249103.396039] iwlwifi 0000:09:00.0: Current SW read_ptr 25 write_ptr 30
[249103.396096] iwl data: 00000000: 00 00 00 3e 00 00 00 00 00 00 00 00 00 00 00 00 ...>............
[249103.396137] iwlwifi 0000:09:00.0: FH TRBs(0) = 0x80003087
[249103.396193] iwlwifi 0000:09:00.0: FH TRBs(1) = 0x8010201d
[249103.396267] iwlwifi 0000:09:00.0: FH TRBs(2) = 0x802010b3
[249103.396309] iwlwifi 0000:09:00.0: FH TRBs(3) = 0x80300032
[249103.396381] iwlwifi 0000:09:00.0: FH TRBs(4) = 0x00000000
[249103.396421] iwlwifi 0000:09:00.0: FH TRBs(5) = 0x00000000
[249103.396468] iwlwifi 0000:09:00.0: FH TRBs(6) = 0x00000000
[249103.396508] iwlwifi 0000:09:00.0: FH TRBs(7) = 0x007040a3
[249103.396772] iwlwifi 0000:09:00.0: Q 0 is active and mapped to fifo 3 ra_tid 0x0000 [51,51]
[249103.397082] iwlwifi 0000:09:00.0: Q 1 is active and mapped to fifo 2 ra_tid 0x0000 [180,180]
[249103.397261] iwlwifi 0000:09:00.0: Q 2 is active and mapped to fifo 1 ra_tid 0x0000 [25,30]
[249103.397353] iwlwifi 0000:09:00.0: Q 3 is active and mapped to fifo 0 ra_tid 0x0000 [136,136]
[249103.397532] iwlwifi 0000:09:00.0: Q 4 is active and mapped to fifo 7 ra_tid 0x0000 [164,164]
[249103.397625] iwlwifi 0000:09:00.0: Q 5 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[249103.397804] iwlwifi 0000:09:00.0: Q 6 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[249103.397897] iwlwifi 0000:09:00.0: Q 7 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[249103.398047] iwlwifi 0000:09:00.0: Q 8 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[249103.398226] iwlwifi 0000:09:00.0: Q 9 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[249103.398318] iwlwifi 0000:09:00.0: Q 10 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[249103.398498] iwlwifi 0000:09:00.0: Q 11 is inactive and mapped to fifo 1 ra_tid 0x0000 [245,245]
[249103.398591] iwlwifi 0000:09:00.0: Q 12 is inactive and mapped to fifo 0 ra_tid 0x0002 [10,10]
[249103.398770] iwlwifi 0000:09:00.0: Q 13 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[249103.398862] iwlwifi 0000:09:00.0: Q 14 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[249103.399039] iwlwifi 0000:09:00.0: Q 15 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[249103.399219] iwlwifi 0000:09:00.0: Q 16 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[249103.399311] iwlwifi 0000:09:00.0: Q 17 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[249103.399490] iwlwifi 0000:09:00.0: Q 18 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[249103.399583] iwlwifi 0000:09:00.0: Q 19 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[249152.974880] ACPI: \_SB_.PCI0: ACPI_NOTIFY_BUS_CHECK event: unsupported
[249152.974889] ACPI: \_SB_.PCI0: Bus check notify on _handle_hotplug_event_root
[252935.552828] ACPI: \_SB_.PCI0: ACPI_NOTIFY_BUS_CHECK event: unsupported
[252935.552844] ACPI: \_SB_.PCI0: Bus check notify on _handle_hotplug_event_root
[253193.025564] ACPI: \_SB_.PCI0: ACPI_NOTIFY_BUS_CHECK event: unsupported
[253193.025573] ACPI: \_SB_.PCI0: Bus check notify on _handle_hotplug_event_root
По запросу «fail to flush all tx fifo queues» гуглятся багрепорты, в которых советуют отключить wifi n (не вариант совершенно) и прописать «options iwlwifi bt_coex_active=0» в /etc/modprobe.d/iwlwifi.conf (не помогает)
Дистр - арч, ядро 3.11.2-3-ck