So you have a LVDS, but not a VGA, so maybe the quirk will work the
other way -- i.e. disable the VGA... See e.g.
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
intel/+bug/273306/comments/13 for how to do it. The problem may be the
same -- a non-existent VGA connection is detected and gets a resolution
assigned, and the LVDS (or TMDS in the case of bug 273306) is forced to
use this same resolution. Also bug 295327 (on a G45 chipset) has a
similar issue, but in that case it is a non-existent HDMI-2 connection
that forces the resolution. Maybe we should have a tag for those ghost
monitors?

Could you attach the output of `xrandr` and `xrandr --verbose` (before
doing the VGA-quirk) so we can check if the output is similar to that of
bug 273306?

-- 
Auto-detection of i915 fails with default or no xorg.conf
https://bugs.launchpad.net/bugs/269564
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