wrong display size

[Felix Miata]

Sebastian Gutzwiller composed on 2016-06-14 11:10 (UTC+0200):

> I have a LCD display (115 mm x 86 mm) with VGA resolution (640 x 480)
> connected over LVDS with an Intel Atom N450.

> After upgrading from Ubuntu 10.04 to 14.04  I only see the upper left
> detail of the whole screen (see attachment 'display_picture.jpg').

> The Xorg log (see attachment 'Xubuntu.14.04.4.LTS.Xorg.0.log') reported
> a physical screen size of 270 mm x 203 mm which is pretty much the size
> of the whole screen.

> Any suggestions?

Something to try (I don't have any Intel Atoms to test on):

1.login on a vtty
2.sudo apt-get purge xserver-xorg-video-intel
3.reboot (or restart X xserver)

Reason: sometime post-server 1.16.x. the generic modesetting driver was moved 
directly into the server itself. It's supposed to be competent for all 
non-ancient mainstream gfxchips, a substitute for chip-specific drivers. If 
it doesn't help, it's up to you whether to bother reinstalling the intel driver.
-- 
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