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Tasklist

FS#33503 - [linux] 3.7.3 X220 wifi drops out intermittedly

Attached to Project: Arch Linux
Opened by Kai Hendry (hendry) - Tuesday, 22 January 2013, 01:27 GMT
Last edited by Tobias Powalowski (tpowa) - Friday, 05 April 2013, 14:14 GMT
Task Type Bug Report
Category Kernel
Status Closed
Assigned To Tobias Powalowski (tpowa)
Thomas B├Ąchler (brain0)
Architecture All
Severity Medium
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 3
Private No

Details

Description:
I can't see anything in my log, to the reason why the wifi cut out.

I did not suspend. So it's not related to https://wiki.archlinux.org/index.php/ThinkPad_X230#Suspension

I suspect it could be the legendary `iwlwifi 0000:03:00.0: fail to flush all tx fifo queues` I've seen crop up on several disparate bug reports. Though since this message doesn't appear in `journalctl -f` I am in the dark.

Additional info:
* 3.7.3-1

x220:~$ lspci -s 03:00.0 -vvv
03:00.0 Network controller: Intel Corporation Centrino Advanced-N 6205 [Taylor Peak] (rev 34)
Subsystem: Intel Corporation Centrino Advanced-N 6205 AGN
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 49
Region 0: Memory at f1500000 (64-bit, non-prefetchable) [size=8K]
Capabilities: <access denied>
Kernel driver in use: iwlwifi
This task depends upon

Closed by  Tobias Powalowski (tpowa)
Friday, 05 April 2013, 14:14 GMT
Reason for closing:  Fixed
Additional comments about closing:  Reopen if still valid for 3.8.x
Comment by Kai Hendry (hendry) - Friday, 25 January 2013, 05:04 GMT
I can confirm the same issue with 3.7.4-1-ARCH.

Jan 25 13:02:00 x220 kernel: iwlwifi 0000:03:00.0: fail to flush all tx fifo queues
Jan 25 13:02:02 x220 kernel: iwlwifi 0000:03:00.0: fail to flush all tx fifo queues
Jan 25 13:02:04 x220 kernel: iwlwifi 0000:03:00.0: fail to flush all tx fifo queues
Jan 25 13:02:06 x220 kernel: iwlwifi 0000:03:00.0: fail to flush all tx fifo queues
Comment by Nimrod (milonimrod) - Monday, 04 February 2013, 11:15 GMT
I can confirm the same issue occurs on 3.7.5-1-ARCH.
It happens on several different networks, home and enterprise alike.

Only restart or turning of the wireless connection physically helps for a while.
Comment by Kai Hendry (hendry) - Monday, 04 February 2013, 11:45 GMT
I tried adding -d (debug switch) to `wpa_supplicant -d -B -D wext -c /etc/wpa_supplicant.conf -i wlan0` to see if I could see what it's doing. Nadda.

I wouldn't mind so much if wpa_supplicant would just re-establish the connection for me, but it doesn't seem to realise it's down. So I have to manually bring it down and up again. :(

Thanks Nimrod for confirming this issue and sharing my pain.
Comment by Vasily Khoruzhick (anarsoul) - Tuesday, 05 February 2013, 10:45 GMT
Same issue here on x230
Comment by Kai Hendry (hendry) - Tuesday, 12 February 2013, 02:22 GMT
Comment by Tobias Powalowski (tpowa) - Wednesday, 27 February 2013, 11:26 GMT
Status on 3.8?
Comment by Vasily Khoruzhick (anarsoul) - Wednesday, 27 February 2013, 11:55 GMT
3.8 did not get into core repo yet
Comment by Tobias Powalowski (tpowa) - Wednesday, 27 February 2013, 11:56 GMT
It is available in testing repository.
Comment by Vasily Khoruzhick (anarsoul) - Wednesday, 27 February 2013, 12:06 GMT
ok, I'll try it tonight

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