[ubuntu-x] Jaunty upgrade report

Chris Jones chris.jones at canonical.com
Thu Apr 2 11:27:02 BST 2009


Bryce Harrington wrote:
> On Wed, Apr 01, 2009 at 07:11:01PM +0100, Chris Jones wrote:
>> I have subsequently pulled xf86-video-intel from git and identified the
>> revision that matches up with the 2.6.3 release currently in Jaunty. My
>> plan for this evening is to install the xorg-edgers snapshot of DRM and
>> then attempt to bisect xf86-video-intel in the hope that there is a
>> simple change which fixes things; With the diff between 2.6.3 and tip
>> being ~8k5 lines, I am not expecting a miracle one-liner, nor have I
>> tested the xorg-edgers PPA on Matt Barker's X61.
> If you find a simple change fixes things, that would be great.  I have a
> suspicion though that solving this is going to require a number of
> different changes.

It turns out that my earlier assumptions were wrong and this is entirely
down to EXA vs UXA. Using EXA in either jaunty's 2.6.3 or a 2.6.99
snapshot performs poorly, and switching either to UXA brings back
Intrepid smoothness (and other bugs such as occasional rendering
artifacts, hangs and segfaults on resume).

Chris Jones
  cmsj at canonical.com

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