The radeon driver no longer supports UMS. Because of the current PowerPC kernel config (radeonfb is built in) KMS drm cannot be activated. You are falling back to the fbdev driver in 8 bit mode (hence the poor colors).
One way to activate KMS is using the video=ofonly parameter (this disables radeonfb). If this causes freezing then you should combine it with radeon.agpmode=-1 (forces PCI mode). I've said the same thing on this ubuntu forums thread http://ubuntuforums.org/showthread.php?t=2053596 These solutions have also been documented in the PowerPC FAQ for a long time now https://wiki.ubuntu.com/PowerPCFAQ#What_yaboot_parameters_should_I_use_for_graphics_problems.3F and https://wiki.ubuntu.com/PowerPCFAQ#Radeon_cards -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1046951 Title: No desktop environment or window manager, just X with the mouse To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/1046951/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
