Well for those following along and catching this from google and what not, i've identified a solution to this. If you are using mesa 7.3, you'll need to add this commit from mesa git: <pre>+ From 529d1d720e1422bad1880ef33fae1c9423112d2e Mon Sep 17 00:00:00 2001 + From: Eric Anholt <<a href="mailto:eric@anholt.net">eric@anholt.net</a>> + Date: Wed, 04 Feb 2009 03:29:11 +0000 + Subject: swrast: Add support for x8r8g8b8 fbconfig. + + This lets swrast produce an fbconfig suitable for the root visual now that + the server's not allowing mismatched fbconfigs. </pre>It's not currently targeted at release 7.4, but I proposed it get added. Regards <div class="gmail_quote">On Tue, Mar 24, 2009 at 09:26, Mario Limonciello <<a href="mailto:superm1@ubuntu.com">superm1@ubuntu.com</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Hi: <div class="gmail_quote"> I've been attempting to debug a bug that recently entered Ubuntu jaunty [1] related to MythTV. It seems that a whole slew of X BadMatch errors and RenderBadPicture errors are thrown out whenever a QWidget show call is used. Using git-bisect, I came to the conclusion it got introduced at this commit in the xorg-server 1.6 branch: <blockquote>commit 8b967b24690cb072fc37c463eceb2b886cef80c4 Author: Eric Anholt <<a href="mailto:eric@anholt.net" target="_blank">eric@anholt.net</a>> Date: Mon Feb 2 10:13:46 2009 -0800 glx: Don't match fbconfigs to visuals with mismatched channel masks. This fixes at least one known bug, where the depth 32 visual would end up with a depth 24 fbconfig attached, angering compiz. (cherry picked from commit 5100d829a4d71ce4a9fbc2b81694a1fb90066ccf) Signed-off-by: Keith Packard <<a href="mailto:keithp@keithp.com" target="_blank">keithp@keithp.com</a>> </blockquote>Having no in depth knowledge of this code, I'm at a bit of a loss of whether to point fingers at QT3 that some patch is necessary, or if this is a genuine problem with Xorg. [1] <a href="https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/341898" target="_blank">https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/341898</a> Regards, </div> -- Mario Limonciello <a href="mailto:superm1@gmail.com" target="_blank">superm1@gmail.com</a> Sent from: Austin Texas United States. </blockquote></div> -- Mario Limonciello <a href="mailto:superm1@gmail.com">superm1@gmail.com</a>