Public bug reported:
I have two displays on my Ubuntu 10.04 LTS system, ATI Radeon RV620 LE,
configured as individual screens (no xinerama). One is new and wide-
screen, 1920x1200, and the other is older, running in 1600x1200.
When I move the mouse cursor over the right edge of the left (1920x1200)
screen, it appears on the right screen (1600x1200), but not at it's left
edge, but at quite exactly 320 pixels (1920-1600!) away from the left
edge. The same happens when I move the cursor back to the left screen -
the cursor appears 320 pixels away from it's right edge. Here's a little
video which shows the effect:
http://www.youtube.com/watch?v=luk00_3XTpU
The offset is quite exactly 320 pixels (I verified by creating a 320px
wide image in gimp and using it as a scale in 1:1 mode).
I am not sure which package I should point to, xorg, xserver-xorg-video-
ati, or compiz. The problem appeared when I last upgraded to a new
Ubuntu release, it used to work fine before that.
ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: xserver-xorg 1:7.5+5ubuntu1
ProcVersionSignature: Ubuntu 2.6.32-34.77-generic 2.6.32.44+drm33.19
Uname: Linux 2.6.32-34-generic x86_64
NonfreeKernelModules: fglrx
Architecture: amd64
Date: Mon Oct 10 12:42:29 2011
InstallationMedia: Ubuntu 9.10 Karmic Koala - Release amd64 (20091027)
MachineType: Dell Inc. OptiPlex 760
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-34-generic
root=UUID=971fd32d-b5fd-4a21-aed6-d9a2ff1f8a48 ro quiet splash
ProcEnviron:
PATH=(custom, user)
LANG=en_US.utf8
SHELL=/bin/bash
SourcePackage: xorg
dmi.bios.date: 08/17/2009
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A05
dmi.board.name: 0M858N
dmi.board.vendor: Dell Inc.
dmi.board.version: A01
dmi.chassis.type: 6
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvrA05:bd08/17/2009:svnDellInc.:pnOptiPlex760:pvr:rvnDellInc.:rn0M858N:rvrA01:cvnDellInc.:ct6:cvr:
dmi.product.name: OptiPlex 760
dmi.sys.vendor: Dell Inc.
system:
distro: Ubuntu
codename: lucid
architecture: x86_64
kernel: 2.6.32-34-generic
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug lucid
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which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/871665
Title:
Mouse pointer does not move correctly from a screen to another in a
dual-head config - jumps too far
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/871665/+subscriptions
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