Public bug reported:
I run Oneiric alpha 2 64+mac live CD. Plugging in an external monitor
with a DVI cable causes the screen corruption.
The laptop's main screen splits into two halves. The top one keeps
showing whatever it was showing when the monitor was plugged.
The bottom half displays properly.
The external monitor is fully black except for the menu bar at the top.
Unplugging the monitor makes everything work again.
Using a VGA cable gives almost the same results, except that the split
does not happen at the middle of the screen but rather about a quarter
from the top. The top also displays black rather than what was there
originally.
ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: xorg 1:7.6+7ubuntu1
ProcVersionSignature: Ubuntu 3.0-3.4-generic 3.0.0-rc5
Uname: Linux 3.0-3-generic x86_64
Architecture: amd64
Date: Fri Jul 15 10:02:35 2011
LiveMediaBuild: Ubuntu 11.10 "Oneiric Ocelot" - Alpha amd64+mac (20110705.1)
ProcEnviron:
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: xorg (Ubuntu)
Importance: High
Status: Incomplete
** Tags: amd64 apport-bug corruption iso-testing oneiric running-unity unity-2d
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https://bugs.launchpad.net/bugs/810971
Title:
External monitor causes screen corruption
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