I'm searching at freedesktop.org for any similar bugs... if I don't find any, I'll file a bug so that it's at least on their radar and they know of the problem.
If a bug report already exists, or if I create one (either way), I'll link the upstream in the relevant launchpad bugs.
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Out of interest: got some easy way I could see if I can replicate this on Fedora 13? I've never had this kind of problems myself so just wondering. (as in, the audio part, I have no wireless)Leave a comment:
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Yes, it would be great if this was looked into. I've got affected hardware as well. Problems with audio (crackling not caused by Pulseaudio) and wireless connection dropping when running with radeon KMS, typically triggered by fullscreen movie playback or in general ?GPU load? (for lack of better way to describe it). Both problems disappear when disabling kernel mode setting. Thinkpad Z61m with ATI X1400.
These are the bugs I am currently tracking wrt. this issue:
The three last bugs are related to the audio problems I'm seeing when using KMS, two of which I've filed myself.
I've been reluctant to file a bug at freedesktop.org so far, because I don't know if radeon KMS is directly to blame, but what I am sure of is that it triggers the problems. Whether there is some general kernel problem or if KMS alters conditions in a way that shake out bugs in other kernel drivers. So far it looks like only people with ATI IGP or Xnnnn-series cards are affected.
I'm on Ubuntu Lucid x86. Have tested up to mainline kernel 2.6.34-rc7, and the problem persists, so it's not Ubuntu-kernel specific.Leave a comment:
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I forgot to mention (and the edit button is missing)... this is a new problem on Ubuntu 10.04, the bug was present on launch of Lucid final.
Thanks!Leave a comment:
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Radeon KMS bug causing wireless crashes, devs please help
Attn: radeon devs, if you're here... thanks for all your hard work.
There's an ongoing bug report on Launchpad, initially directed toward iwl3945, but it appears that the problem is actually with the radeon driver... wireless hangs/crashes during high GPU utilization (like video playback), but only occurs when kernel modesetting is turned on. With KMS off, the hardware runs normally. This seems to be some sort of regression, either in the kernel or in the driver.
Here's the bug report: https://bugs.launchpad.net/ubuntu/+s...ux/+bug/564376
Please help... there are lots of folks out there with systems that are unusable unless they manually disable kernel modesetting. I'm one of the affected users, in my case on a Thinkpad T60 with X1400 and Intel wireless. There are also users reporting audio corruption under the same conditions as mentioned above, which disappears when KMS is disabled.
Thanks for any help you can provide!
Best regards,
Jason Porter
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