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

[Simon Greenwood]

On 13 February 2010 19:03, Graham Smith <myotisone at gmail.com> wrote:

> Simon,
>
> > 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.
>
> Thanks for the response.
>
> Not that I fully understand this, but does this mean that I will need
> to set up my laptop for every lecture theatre I go into and if I give
> a talk off site find time to sort out the off site projector before I
> start the talk/lecture?
>
> I have looked at dmesg and /var/log/Xorg.O.log, but they have no dates
> so does this mean they only apply to the most recent boot up?
>
>
Stepping back a little, what happens if you plug a projector in after the
laptop has booted and logged in? If that works, do it like that. It sounds
like there's some display detection going on at login that doesn't identify
a projector properly.

I would also guess that you might only need a generic display profile for
all projectors as in my experience they all have similar attributes. I would
also look at how your laptop handles displays. Most laptops would have a
switch between LCD and CRT, which is usually an alt function of one of the
function keys. Something is telling me that Thinkpads have an auto switching
display option in the BIOS which you might need to turn off. I don't know
why it could be the case but it seems possible with the changes to hardware
detection in Karmic.

Simon


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