[Bug 52703] Jerky video/DVD playback since kernel update

[Jens Berke]

Public bug reported:

Binary package hint: linux-image-2.6.15-26-686

I have ubuntu 6.06 installed (no upgrade from Breezy). All packages are
from the ubuntu repositories (and very few from PLF). No drivers
compiled by myself. System: IBM Thinkpad R52 with an ATI Radeon Mobility
M300

Updating from kernel 2.6.15-23 to 2.6.15-25 created a few problems,
which still exist in 2.6.15-26:

* DVD and video playback is choppy / jerky (no matter which player I use). This makes the latest kernel useless for me and I've kept using 2.6.15-23 instead.
* Rhythmbox hangs very often when starting (while checking the music library)
* When you have an application starter on a panel and click it, there's this short little animation of an extending frame indicating that the application is started. This animation needs almost 2 seconds (instead of maybe a quarter of a second) to finish and is jerky as well. This is not anything serious but might be a hint for the cause of the problem.

Why I think the kernel update is the cause:
I had an image of my system in a good and working state, made before the update to 2.6.15-25. After discovering the problems I installed this image again. Then I updated linux-image-2.6.15-26 and linux-restricted-modules-2.6.15-26  only. After that, the problems were there again. So it must be in one these two packages. I'm using the -686 packages. 

If you need more info please let me know.

** Affects: linux-source-2.6.15 (Ubuntu)
     Importance: Untriaged
         Status: Unconfirmed

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Jerky video/DVD playback since kernel update
https://launchpad.net/bugs/52703