[Bug 580398] [NEW] ath5k gain calibration timeout when watching flash video

[SB]

Public bug reported:

i have an Atheros wifi card (ar 5007eg) and since upgrading to lucid and
the kernel that came with it (2.6.31-21, i believe), i'm experiencing
some very strange wifi issues:

- at first, my wifi was very buggy and i got many "noise floor
calibration timeouts" as described in many other bug reports here on
launchpad. i was able to fix this and get a relatively stable wifi using
the backport-modules-wireless package.

- however, i still have stability issues with the ath5k driver that can be reproduced in the following way:
1. surf the internet for hours without problems
2. start a flash video with more than just a couple of minutes (5min approx) of length
3. wifi crashes with a bunch of "gain calibration timeout" error messages
4. suspend/resume fixes the wifi connection
5. repeat

what i cant for the life of me figure out is what exactly flash videos
have to do with my problem. i can surf webpages without flash videos for
hours without problems, i can download hundreds of megabytes smoothly,
but when i try to watch a simple flash video on youtube or on megavideo
or whatever, it crashes my wifi after a relatively random amount of
time. sometimes, my wifi keeps working for 10 or 20 minutes into the
video, and sometimes it crashes after only 2 minutes. but in any and all
cases, my wifi only crashes when i watch flash videos.

i'm filing this a new bug because a) there seems to be some connection
between my wifi problems and flash, and b) i get "gain calibration
timeout" errors instead of the many "noise floor calibration timeout"
errors described in most other bugs (which i dont get anymore since
installing the backport-modules-wireless package).

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-image-2.6.32-22-generic 2.6.32-22.33
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.32-22.33-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-22-generic i686
NonfreeKernelModules: nvidia
AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 2: ls: cannot access /dev/snd/: No such file or directory
AplayDevices: aplay: device_list:223: no soundcards found...
Architecture: i386
ArecordDevices: arecord: device_list:223: no soundcards found...
Date: Fri May 14 10:25:08 2010
Lsusb:
 Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 001 Device 002: ID 064e:a101 Suyin Corp. Acer CrystalEye Webcam
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Acer Aspire 7520
ProcCmdLine: BOOT_IMAGE=/vmlinuz-2.6.32-22-generic root=UUID=f84e7ace-ab45-40eb-b919-89cd2c0b50ea ro quiet splash nomodeset video=uvesafb:mode_option=1280x1024-24,mtrr=3,scroll=ywrap
ProcEnviron:
 LANG=de_DE.utf8
 SHELL=/bin/bash
SourcePackage: linux
dmi.bios.date: 07/19/2007
dmi.bios.vendor: Acer
dmi.bios.version: V1.06
dmi.board.name: Fuquene
dmi.board.vendor: Acer
dmi.board.version: N/A
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAcer:bvrV1.06:bd07/19/2007:svnAcer:pnAspire7520:pvrV1.06:rvnAcer:rnFuquene:rvrN/A:cvnAcer:ct10:cvrN/A:
dmi.product.name: Aspire 7520
dmi.product.version: V1.06
dmi.sys.vendor: Acer

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 lucid needs-upstream-testing networking regression-potential

-- 
ath5k gain calibration timeout when watching flash video
https://bugs.launchpad.net/bugs/580398
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