Above is my report. Further experimenting shows that disabling *all* power management seems to prevent this from happening but obviously disabling acpi entirely is not a viable solution.
-- xserver-xorg-driver-i810: Error in I830WaitLpRing(), now is -99922196, start is -99924197 https://launchpad.net/bugs/56501 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
