Public bug reported:
This bug report is based on anectodal evidence gathered when helping
someone else get back to his proper resolution on his laptop, but I
belive it's accurate.
He'd been playing around with the TV-Out port, and now his screen was
stuck at a resolution of 1360x768, so it didn't fill the screen (which
has a physical resolution of 1440x900). It turned out that his xorg.conf
specified a virtual resolution of 2048 by 768, so apparantly XRANDR
couldn't offer resolutions with a height of more than 768 pixels.
I imagine this happened because he at some point had the laptop and the
TV-Out both at 1024x768, side by side, and tried to apply it, at which
point this setting would get written to xorg.conf.
The core problem here, I think, is that there's no obvious way to revert
the setting in xorg.conf, and xrandr doesn't even list the resolutions
that exceed the virtual resolution, so gnome-display-properties can't
even know that there's a higher resolution that is not being shown.
affects ubuntu/gnome-control-center
** Affects: gnome-control-center (Ubuntu)
Importance: Undecided
Status: New
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Screen stuck at suboptimal resolution due to virtual size
https://bugs.launchpad.net/bugs/412948
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