ubuntu-x-swat team mailing list archive

[wessexmario <wessexmario-home@xxxxxxxxxxx>]

Public bug reported:

Binary package hint: xorg

I have just upgraded from 9.10 to 10.04, and I am continually getting lockups.
I have 3 monitors connected to 2 twin-port Nvidia GeForce 6200 PCI cards.
The centre monitor is my 'Primary' screen with the menu and taskbar panels. Center and right hand screens are connected to the same graphics card. All three monitors were working perfectly with 9.10.

With 10.04, there are a few consistently replicable problems.

If I work using the centre and right screens, then all is well.
If I move the mouse into the left hand screen, then as the cursor crosses to the left screen, the mouse and keyboard freeze. When this happens, the cursor mostly disappears, but can be seen flickering alternately in both the location where is should have dissapeared from one screen, and in the location on the adjacent screen where it should have re-appeared. Moving the mouse has no effect, and the keybopard does not respond to Ctrl-Alt-Del, Ctrl-Alt-Backspace, or any other input. 

If I start a program and the window appears in the left hand screen,
then I can't access it with the mouse because of the above problem. If I
select 'Move' from the taskbar, then as I drag the mouse, the
application window moves from the left to the centre screen, but the
mouse (hand) pointer is actually moving from the center of the right
hand screen to the right. As the focus of the window moves from the left
hand screen, the window then suddenly jumps to the right hand screen and
it's titlebar is then positioned correctly under the mouse cursor.

I can drag a window almost fully into the left hand screen, by holding
the title bar by it's right hand end, and without allowing the mouse to
enter the left hand screen, I can double click it to maximise the window
in the left screen. But, if the mouse cursor crosses the center-left
screen boundry, the mouse and keyboard lock up as before.

The above relates to the configuration with the submitted diagnostic files.
The problem occurs regardless of what applications are running or being dragged across the screens. It fails equally with browsers, terminal windows or any other.

While trying to narrow down what could be the problem, I tried a couple of different configurations.
I disabled the left hand screen (hardware configuration unchanged, only xorg.conf updated) and used only the center and right screens. With that configuration similar symptoms appeared between the center and right hand screens.
In some configurations, if Alt was pressed on it's own while the kbd/mouse were frozen, then the display was reset and the X/GDM user selection login screen was shown. You could then log back in. (with situation unchanged) but I've tried so many different configs and I couldn't determine what may be associated for this last symptom.
Mario

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: xorg 1:7.5+5ubuntu1
ProcVersionSignature: Ubuntu 2.6.32-22.33-generic-pae 2.6.32.11+drm33.2
Uname: Linux 2.6.32-22-generic-pae i686
NonfreeKernelModules: nvidia
Architecture: i386
Date: Wed May 26 18:46:23 2010
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-22-generic-pae root=UUID=77dcf581-c564-489a-a98e-28dbe0f2a7d4 ro vmalloc=256m nomodeset quiet splash
ProcEnviron:
 LANG=en_GB.utf8
 SHELL=/bin/bash
SourcePackage: xorg
Symptom: display
Title: Xorg freeze
Xrandr:
 Error: command ['xrandr', '--verbose'] failed with exit code 1: Xlib:  extension "RANDR" missing on display ":0.0".
 RandR extension missing
dmi.bios.date: 01/26/2005
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1010.003
dmi.board.name: A8V Deluxe
dmi.board.vendor: ASUSTeK Computer Inc.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1010.003:bd01/26/2005:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASUSTeKComputerInc.:rnA8VDeluxe:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: To Be Filled By O.E.M.
dmi.product.version: To Be Filled By O.E.M.
dmi.sys.vendor: To Be Filled By O.E.M.
system:
 distro:             Ubuntu
 codename:           lucid
 architecture:       i686
 kernel:             2.6.32-22-generic-pae

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug freeze i386 lucid

-- 
Xorg freeze when moving cursor between screens
https://bugs.launchpad.net/bugs/585985
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xorg in ubuntu.