Fwd: Commit 5100d829a4d71ce4a9fbc2b81694a1fb90066ccf causing problems with mythtv

Mario Limonciello superm1 at ubuntu.com
Tue Mar 24 07:29:29 PDT 2009


Hi:

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:

commit 8b967b24690cb072fc37c463eceb2b886cef80c4
Author: Eric Anholt <eric at anholt.net>
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 <keithp at keithp.com>

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] https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/341898

Regards,

-- 
Mario Limonciello
superm1 at gmail.com
Sent from: Austin Texas United States.
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