Ubuntu
xserver-xorg-video-intel package

  1. Bug #1098334
  2. Comment #34

Comment 34 for bug 1098334

Revision history for this message
In , Chris Wilson (ickle) wrote :

Found a hint with

commit b2245838c15b54d72557de8facb7cc15d59624ae
Author: Chris Wilson <email address hidden>
Date: Tue Nov 6 16:32:32 2012 +0000

    sna/gen4: opacity spans requires the per-rectangle flush w/a

    Note that this is worsened, but not caused, by:

    commit e1a63de8991a6586b83c06bcb3369208871cf43d
    Author: Chris Wilson <email address hidden>
    Date: Fri Nov 2 09:10:32 2012 +0000

        sna/gen4+: Prefer GPU spans if the destination is active

    References: https://bugs.freedesktop.org/show_bug.cgi?id=55500
    Signed-off-by: Chris Wilson <email address hidden>

Does this help?