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
---
Architecture: i386
DistroRelease: Ubuntu 10.04
NonfreeKernelModules: nvidia
Package: linux (not installed)
ProcEnviron:
LANG=de_DE.utf8
SHELL=/bin/bash
Tags: lucid
Uname: Linux 2.6.34-999-generic i686
UnreportableReason: The running kernel is not an Ubuntu kernel
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare saned scanner
Hi SB,
If you could also please test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https:/
Thanks in advance.
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