Public bug reported:
My setup is an nvidia Quadro NVS 450 with three heads. My xorg.conf is
set up to use Xinerama (not TwinView -- this card can't do TwinView on
>2 heads, also I want to rotate two of the screens). This works fine
with other desktops, and worked fine in 11.04. Lightdm works fine.
When Unity-2D launches, the screens end up in some bizarre mirroring
mode, where all three screens are showing the same content (including
launcher, menubar, app windows, etc). The mouse can roam freely across
all three screens, but can only interact with the leftmost screen. The
middle screen is bigger, so it shows a larger deskop. This is best
explained by looking at the attached screenshot, and understanding that
it's three monitors, side by side.
I have tried using the "nvidia-current" and "nvidia-current-updates"
drivers, as well as manually installing the latest nvidia drivers --
they all do the same thing. I tried nouveau, but couldn't get it to
work at all. Again, non-Unity desktops work fine.
(I don't use Unity-3D because of known incompatibilities with Xinerama
and compiz. But now Unity-2D doesn't work either.)
ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: unity-2d 4.12.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 1.23-0ubuntu3
Architecture: i386
Date: Sun Oct 16 20:31:18 2011
PackageArchitecture: all
ProcEnviron:
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/bin/zsh
SourcePackage: unity-2d
UpgradeStatus: Upgraded to oneiric on 2011-10-15 (1 days ago)
** Affects: unity-2d (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug i386 oneiric running-unity unity-2d
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https://bugs.launchpad.net/bugs/876193
Title:
Unity 2D is screwy with my three-head Xinerama
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