gnome crashes on selecting stuff across different monitors

[Fox]

Binary package hint: xorg

I have dual monitors and special effects enabled. I use a dvi splitter for dual monitors. When I hold my mouse (left click and hold) on monitor 1 and move mouse to the second monitor gnome crashes.

Some info [I dont know what all info has already been collected by ubuntu-bug]:
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: Radeon X1550 Series
OpenGL version string: 2.1.8087 Release
OpenGL shading language version string: 1.20
OpenGL extensions:

If any debug info is needed I would be happy to help.

ProblemType: Bug
Architecture: i386
DistroRelease: Ubuntu 8.10
NonfreeKernelModules: fglrx
Package: xorg 1:7.4~5ubuntu3
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/home/username/Documents/scripts
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersion: Linux version 2.6.27-11-generic (buildd@rothera) (gcc version 4.3.2 (Ubuntu 4.3.2-1ubuntu11) ) #1 SMP Thu Jan 29 19:24:39 UTC 2009

SourcePackage: xorg
Uname: Linux 2.6.27-11-generic i686
xkbcomp:

[Bryce Harrington (bryce)]

Are you able to reproduce this issue on current jaunty? If so, please collect a full backtrace - see http://wiki.ubuntu.com/X/Backtracing for directions.

[Fox (karan-chahal)]

Its on a production machine. I really dont want to install jaunty until it is officially released. Please advise.

[Bryce Harrington (bryce)]

Hmm. I understand the need to keep production systems stable.

There was a fix I put in Jaunty for crashes when using Xinerama and moving the mouse between monitors which I *suspect* may solve this bug, however that was mostly seen on -nvidia. I would bet it fixes this bug too, but probably only $5 or so. It would be nice if you could verify it is fixed in jaunty, but given the circumstances I think what I'll do is mark it fixed. When you get a chance to test, if you find the issue still exists, please reopen with a full backtrace and we can look further.

A couple other positive things you'll find in Jaunty, is that -fglrx now supports xrandr 1.2 (at least partially), which should help with multi-monitor setups, and second the open source -ati driver has improved considerably, so possibly you won't need to resort to binary drivers in the future.