Tim mentioned in an email that the T500 doesn't work well with some projectors:
> Last major issue left on the list is getting projector to work in Stowe
> conf room on a T500 without requiring a reboot w/ it connected at boot time.
We should see if it's a driver issue or if it's problem with the cable or bad fallbacks when ddc fails or something else.
Tim, can you attach your /var/log/Xorg.0.log file please?