I find it quite strange that installing the ATI binary driver can fix a bug on a via chipset. anyway it's a driver problem.
** Changed in: xorg gnome-screensaver (Ubuntu) Sourcepackagename: xorg => xserver-xorg-driver-via Binarypackagename: gnome-screensaver => None -- OpenGL stuff freezes on AMD64 https://launchpad.net/bugs/41404 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs