Public bug reported:
black horizontal bars appear in bottom right hand corner of the display.
see attached picture. although all windows below the glitching are
affected, the mouse cursor strangely floats over these black bars
unaffected. the black bars did not show on the screen print, so i
painted them over the print in GIMP so you see what they look like.
this problem not only occurred in ubuntu, but also xubuntu - 32bit and
64bit versions.
i managed to solve this problem by adding a line to my xorg.conf in the
Device section:
Option "XAANoOffscreenPixmaps" "true"
so my full Device section in my xorg.conf looks like this:
Section "Device"
Identifier "aticonfig-Device[0]"
Boardname "ati"
Option "XAANoOffscreenPixmaps" "true"
Busid "PCI:1:0:0"
Driver "fglrx"
Screen 0
EndSection
Several people seem to have come across this bug. It may have something
to do with the ATI proprietary driver, as I have always used this driver
(7.11).
Here is the link to the forum post where other people are suffering a
similar problem. http://ubuntuforums.org/showthread.php?t=614410
Output: uname -a
Linux wil-notebook 2.6.22-14-generic #1 SMP Sun Oct 14 23:05:12 GMT 2007 i686
GNU/Linux
Is there any other information you guys need?
** Affects: ubuntu
Importance: Undecided
Status: New
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black horizontal bars/glitching on display in bottom right hand corner of
screen
https://bugs.launchpad.net/bugs/177433
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