Ubuntu
linux-ubuntu-modules-2.6.22 package

  1. Bug #144077
  2. Comment #51

Comment 51 for bug 144077

Revision history for this message
shemgp (shemgp) wrote : Re: [gutsy] Regression - "Desktop effects could not be enabled" on ATI Mobility Radeon

Hello,

After an update, I started to have this error when starting compiz..

Checking for Xgl: not present.
Detected PCI ID for VGA: 01:05.0 0300: 1002:4336 (prog-if 00 [VGA])
Checking for texture_from_pixmap: not present.
Trying again with indirect rendering:
Checking for texture_from_pixmap: present.
Checking for non power of two support: present.
Checking for Composite extension: present.
Comparing resolution (1024x768) to maximum 3D texture size (1024): Passed.
Checking for nVidia: not present.
Checking for FBConfig: present.
Checking for Xgl: not present.
Starting gtk-window-decorator

....
Fatal: No GLXFBConfig for default depth, this isn't going to work.
...

I looked at the /var/log/Xorg.0.log and it had an error saying that it couldn't find radeon_dri.so
so i figured the reason was that libgl1-mesa-dri was not installed, so i had no acceleration at all. I installed it and it worked.

Maybe this will help someone. I'm not sure why libgl1-mesa-dri was not installed. i think it was installed before but was removed by an update or something.

Maybe ubuntu has to have a page where people can follow steps in troubleshooting compiz problems.. eg. check acceleration, check blacklist, etc...