[ubuntu-uk] Karmic won't boot with digital projector connected

[Graham Smith]

I have posted this on the Ubuntu forums as well, but hoping to
increase my chances of a solution by spreading the net.

My Thinkpad T42 with Karmic freezes just after login, if I have a
digital projector connected.

This is fresh install of Karmic that doesn't work.

It was working fine with an 8.10 to 9.04 to 9.10 upgrades, so I wasn't
anticipating a problem with this fresh install, so slightly
embarrassing in my class today, especially as it came just after
extolling the virtues of Linux !!

I won't be able to check this out now until next week, but can anyone
suggest what I should do. Until now and since 7.10, it has always
"just worked". Same Thinkpad, same projector, so no idea where to
start.

Thanks,

Graham