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

[Simon Greenwood]

On 13 February 2010 08:16, Graham Smith <myotisone at gmail.com> wrote:

> 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.
>
>
One of the things that changed in karmic is display detection, which now
happens through dbus, and there isn't a fixed xorg.conf any more, just a
stub in /etc/X11. You will probably need to set up the projector as a device
in xorg.conf.

There might be some clues as to what it's doing in dmesg or
/var/log/Xorg.0.log. My guess is that the laptop might be attempting to
switch its default display to the projector.

Simon
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