I ran dpkg-reconfigure xserver-xorg. It fails to detect my video hardware, and defaults to the generic vesa driver.
It must be a problem with the detector script or program in the xserver- org reconfigure, because the hardware is detectable by lspci -X. lspci -X returns "PCI:1:0:0 VGA compatible controller: Silicon Integrated Systems [SiS] 661/741/760/761 PCI/AGP VGA Display Adapter" When I manually choose the sis driver in the reconfig, the display works as it did in Breezy (which is good) -- upgrade to dapper causes display slow-down https://launchpad.net/bugs/50503 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs