Ubuntu
xserver-xorg-video-ati package

  1. Bug #444139
  2. Comment #53

Comment 53 for bug 444139

Revision history for this message
bagl0312 (bagl0312) wrote : Re: (Needs KMS) Background and full screen apps don't show up when Normal Visual Effects on (Radeon 7500)

Putting simply:

 Option "AGPSize" "32"

as suggested by Tormod doesn't work for me.
gnome-appeareance-properties refuses to switch desktop effects on.

If I add:
Option "BusType" "PCI"
desktop effects can be enabled but gdm is unstable: the screen gets all black if I open a few firefox windows.

Increasing AGPSize to 64 works but I get a kernel panic few minutes after logon if I open several windows.

To have a stable system I have to put all the options below in the Device section:

Section "Device"
        Driver "ati"
        Identifier "Radeon 9200"
        Option "BusType" "PCI"
        Option "AccelMethod" "EXA"
        Option "MigrationHeuristic" "greedy"
        Option "AGPSize" "64"
EndSection