GDM has wrong monitor resolution, with a bit of a howto

[Tim]

For some reason, my installation picks the wrong monitor resolution, by
default.  In my case, less resolution than it could manage, and results
in a weird aspect ratio.  So I have to manually configure each user to
use the correct one, which is a bit annoying.  That leaves gdm with the
wrong resolution, and not quite so easily resolved.

However, copying a working ~/.config/monitors.xml file over to the gdm
homespace in /var/lib/gdm/.config/monitors.xml fixes that up.

Also copying it into /etc/skel/.config/monitors.xml ought to preset any
new users with a working screen resolution, but I haven't tested that,
yet.

-- 
[tim at localhost ~]$ uname -rsvp
Linux 3.6.6-1.fc17.x86_64 #1 SMP Mon Nov 5 21:59:35 UTC 2012 x86_64

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