> Am I right to guess that you have an ATI Mac64 PCI card in the Ultra5? In that > case, the error below seems important: > > [542823.455] (WW) Warning, couldn't open module mach64 > > [542823.456] (EE) Failed to load module "mach64" (module does not > exist, 0) Did you install xserver-xorg-video-mach64 ?