Just hit this bug with my thinkpad X201 (Arrandale core i7 M620) after the following sequence:
xrandr --output HDMI1 --off (its actually a DVI display using a DP->DVI cable from the docking station)
undock
suspend
get home, unsuspend
Notice that xrandr still thinks I have a 3200 pixel wide display (1920 for the external monitor, 1280 for the laptop panel). I don't think I've had this happen before.
Run xrandr --fb 1280x800
black screen, and 'Sorry, Ubuntu 12.04 has experienced an internal error' dialog after reboot.
Just hit this bug with my thinkpad X201 (Arrandale core i7 M620) after the following sequence:
xrandr --output HDMI1 --off (its actually a DVI display using a DP->DVI cable from the docking station)
undock
suspend
get home, unsuspend
Notice that xrandr still thinks I have a 3200 pixel wide display (1920 for the external monitor, 1280 for the laptop panel). I don't think I've had this happen before.
Run xrandr --fb 1280x800
black screen, and 'Sorry, Ubuntu 12.04 has experienced an internal error' dialog after reboot.