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 Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1377878 Title: PPC - GUI freezes except for mouse pointer Status in “linux” package in Ubuntu: Confirmed Bug description: During the installation the computer freezes completely except for the mouse pointer. And even that is stuck with whatever shape it happened to have at the time it froze. The steps I have to cause the freeze are run Ubiquity to start the installation open a terminal, run Ubuntu-bug and let it launch Firefox. It will freeze every time then. Even the consoles (ctrl-alt-f1 etc) are unavailable. What kind of information can I collect and how? To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1377878/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
