Tried both the commercial and Ubuntu fglrx drivers. Tried franceloc's addition to the xorg.conf.
Still have the lockups as stated above. "fglrxinfo" in a terminal returns: display: :0.0 screen: 0 OpenGL vendor string: ATI Technologies Inc. OpenGL renderer string: RADEON XPRESS 200 Series Generic OpenGL version string: 2.0.5814 (8.25.18) Downgrading to the "ati" driver cures the lockups, but then I lose 3d acceleration. Dang! David -- 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