EasyPeasy Overview

ath5k driver signal experiences lag spikes

Bug #338991 reported by David Nivens
4
Affects Status Importance Assigned to Milestone
EasyPeasy Overview
Confirmed
High
mb74

Bug Description

Cards that use the ath5k driver reportedly "stutters" and "stalls" (lag spikes) while in use. This has only been reported to be a problem on eeePCs so far.
This has been partially resolved by lowering the transfer rate to 24Mbits; however this isn't a proper fix, just a quick fix till this is properly resolved.

Full thread here: http://forums.geteasypeasy.com/viewtopic.php?f=12&t=616
Quick fix here: http://forums.geteasypeasy.com/viewtopic.php?p=4038#p4038

See original description
David Nivens (nivensd)
Changed in easypeasy:
status: New → Confirmed
David Nivens (nivensd)
description: updated
David Nivens (nivensd)
Changed in easypeasy:
importance: Undecided → High
Jon Ramvi (ramvi)
Changed in easypeasy:
assignee: nobody → mb74 (mrb74)
Revision history for this message
mb74 (mrb74) wrote :

Please try this latest kernel:
http://files.getdropbox.com/u/709242/kernel/linux-headers-2.6.30.3-ep1_2.6.30.3-ep1-10.00.Custom_i386.deb
After you've installed it and before reboot execute the following commands:
update-initramfs -c -k 2.6.30.3-ep1
update-grub

Revision history for this message
mb74 (mrb74) wrote :

Oh sorry. Wrong link. Here is the kernel:
http://files.getdropbox.com/u/709242/kernel/linux-image-2.6.30.3-ep1_2.6.30.3-ep1-10.00.Custom_i386.deb

Revision history for this message
bigbloke (bigbloke) wrote :

I have recently migrated to ubuntu netbook remix on an eee900 (2gb ram +64gb runcore) and experienced exactly this issue.

I managed to get acceptable wireless performance back by regressing the kernel to 2.6.28-11-generic #42-Ubuntu SMP
and opening up the rmem settings / manually enabling tcp windows scaling in /etc/sysctl.conf

I can now achieve 8mbps throughput with the stock card - I get better performance in win32 - but I can live with this

I also booted the live cd of karmic koala - detected the wifi card , associated, but wouldnt transfer IP

I hope this gives someone a pointer to whatever is wrong on the eee900, and hope it doesnt throw the debug team off course!

regards

BB

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