Radeon HDMI audio bug affecting video playback speed

[verde]

I have a problem with the latest kernel releases. My GPU in my HTPC is a Radeon 2600 PRO. It is connected with HDMI cable and I have set "radeon.audio=1" because I don't have seperate sound card.

From 3.10 kernel release and above, when I enable HDMI audio output, video playback speed is faster than normal (about "x4" the real speed).

Till 3.9.11 upstream kernel, video playback was ok. I have checked even 3.12 kernel but bug still exist.

I opened a bug report to launchpad and it seems it is affecting multiple users.

Please someone report that to AMD developers. I really want to upgrade to 3.11 or 3.12 kernel to enable DPM (even in my old GPU temperature difference is more than 8oC) but with such an important bug, I can't.

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1239233

[verde]

please Michael move this thread to "Open-Source AMD".

My mistake. Thank you.

[verde]

Bisecting kernel versions, found that a commit to 3.10-RC1 kernel introduced the bug. Hope help to find which commit is the problem.