I believe this is due to incomplete or not at all set up Xorg conf which for some reason is not done for a long time on certain Radeon systems, so those are without DRI and all the bells and whistles.
Did you try what I mentioned above? sudo service lightdm stop sudo Xorg -configure sudo mv xorg.conf.new /etc/X11/xorg.conf sudo nano /etc/X11/xorg.conf [Here some driver options could be set, eg. uncomment pageflip and set it to "True", save any edits and after that reboot] sudo shutdown -r now After a reboot you can check your acceleration with the commands glxinfo and glxgears -info if it works you will notice the gears running well even if quickly moving it's window but likely lubuntu gui will otherwise remain kinda slow but should be better. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1377878 Title: PPC - GUI freezes except for mouse pointer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1377878/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs