I have the same problem. For me "AlwaysRestartServer=true" doesn't help, but what helps is switching from DVI to D-SUB. I have pci express X700, AMD64.
-- Lockup problems with both the free xorg ATI driver and the proprietary fglrx driver, using various ATI cards https://launchpad.net/bugs/30447 -- kubuntu-bugs mailing list kubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs