Check your boot messages with "journalctl -k" and your /var/log/Xorg.0.log then you will get a hint what went wrong with r128.
On current Ubuntu versions there is no need for an xorg.conf, only if you need to tune some specific parameters. No fiddling around with "sudo Xorg-configure" needed. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1541082 Title: [PowerMac3,1] Blotchy GUI graphics for images To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1541082/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp