Ubuntu
linux-source-2.6.15 package

Regressions with upgrade from kernel 2.6.15-23 to 2.6.15-25

Bug #50599 reported by Olivier Tilloy
2
Affects Status Importance Assigned to Milestone
linux-source-2.6.15 (Ubuntu)
Invalid
Undecided
Unassigned

Bug Description

Binary package hint: linux-image-2.6.15-25-686

After upgrading to kernel 2.6.15-25 on my laptop (Acer Extensa 4102WLMI, ATI mobility Radeon X700), all the graphical effects in gnome are very slow and the playback of videos (any file type and DVDs) is very slow as well.
Seems to be the same type of issue as reported here: http://www.ubuntuforums.org/showpost.php?p=1158244&postcount=82 (DVD and video playback is choppy / jerky and when you start an app from the panel, there's this short little animation of an extending frame, this animation needs almost 2 seconds to finish and is jerky as well).
Browsing the forums seems to show that the new kernel has a lot of various issues, while falling back to 2.6.15-23 works perfectly fine.

Revision history for this message
Olivier Tilloy (osomon) wrote :

Forgot to mention that on the other hand, 3D accelerated rendering works as fine as with 2.6.15-23 : using fglrx, fgl_glxgears gives an average framerate of 700fps.

Revision history for this message
André FL Ribeiro (andre-fl-ribeiro) wrote :

same here...

gnome slow as hell
video slow ...
but fgl_glxgears works fine

on laptop with ati X700

Revision history for this message
Olivier Tilloy (osomon) wrote :

Well it seems that after all this was not linked to the new kernel, rather to Gnome and/or GTK.
After an update, everything is back to normal. The following packages were upgraded:

gtk2-engines-pixbuf 2.8.18-0ubuntu1 -> 2.8.18-0ubuntu2
libgtk2.0-0 2.8.18-0ubuntu1 -> 2.8.18-0ubuntu2
libgtk2.0-bin 2.8.18-0ubuntu1 -> 2.8.18-0ubuntu2
libgtk2.0-common 2.8.18-0ubuntu1 -> 2.8.18-0ubuntu2
libgtk2.0-doc 2.8.18-0ubuntu1 -> 2.8.18-0ubuntu2

Ben Collins (ben-collins)
Changed in linux-source-2.6.15:
status: Unconfirmed → Rejected
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