[intel] When I plug in a second monitor, I get a black bar across the top of my screen and the second monitor is black except for the bar at the top.

[JAKemp]

I first asked in #ubuntu+1 on freenode, and they suggested I try a Unity 2D and pointed me towards bugs 808685 and 810971, but my screenshot doesn't look like the one in those bug reports. The cursor always appears on top of the black portions of the screen, as do the menu bars, but when I move applications to the black area, they go behind the black part. The problem doesn't occur in Unity 2D, and when I boot to the machine with the second monitor plugged in, everything works fine.

I running the oneric Alpha 2 on a Lenovo T420 with an i5 2520 and HD3000 graphics.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: unity 4.2.0-0ubuntu5
ProcVersionSignature: Ubuntu 3.0.0-5.6-generic 3.0.0-rc7
Uname: Linux 3.0.0-5-generic x86_64
Architecture: amd64
CompizPlugins: [core,bailer,detection,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,grid,imgpng,gnomecompat,wall,ezoom,workarounds,staticswitcher,resize,fade,unitymtgrabhandles,scale,session,unitydialog,unityshell]
Date: Sun Jul 24 18:18:18 2011
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha amd64 (20110705.1)
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: unity
UpgradeStatus: Upgraded to oneiric on 2011-07-21 (3 days ago)

[Jean-Baptiste Lallement (jibel)]

thanks for your report.

Could you please attach the output of lspci -vvnn
thanks.

[JAKemp (jmknsd)]

As requested, the output of lspci -vvnn

[David Barth (dbarth)]

Fix released in unity-4.20 or so as indicated by Jason.

@JAkemp: Can you test the latest release and report if this bug still occurs in your case? Thanks