Ok - I think I see the same thing, and I think it's actually a gnome-
desktop problem (or, at least, is only triggered by gnome-desktop's
RANDR stuff). Can you please check whether running "xrandr --output
LVDS1 --off" successfully turns off the laptop panel without breaking
the external display?
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: Confirmed => Incomplete
** Changed in: xserver-xorg-video-intel (Ubuntu)
Importance: Undecided => High
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https://bugs.launchpad.net/bugs/861426
Title:
[Oneiric] [Regression] When disabling onboard LVDS display and just
using external VGA screen corruption occurs
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