Comment 67 for bug 1021517

I'm experiencing the same bug in Ubuntu 12.04 precise since I have upgraded from xserver-xorg-lts-precise to xserver-xorg-lts-quantal, I'm using Nouveau nvidia driver.

My xserver crashes each time I click into an image with a tool : selection or paint...

Gimp works when I'm running gimp outside gnome with openbox for example

Error logs :

[ 24003.038] (EE)
[ 24003.038] (EE) Backtrace:
[ 24003.038] (EE) 0: /usr/bin/X (xorg_backtrace+0x34) [0x7f30c86f3644]
[ 24003.038] (EE) 1: /usr/bin/X (0x7f30c853e000+0x1b9599) [0x7f30c86f7599]
[ 24003.038] (EE) 2: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7f30c7864000+0xfcb0) [0x7f30c7873cb0]
[ 24003.038] (EE) 3: /usr/bin/X (0x7f30c853e000+0x663da) [0x7f30c85a43da]
[ 24003.038] (EE) 4: /usr/bin/X (0x7f30c853e000+0x5fce0) [0x7f30c859dce0]
[ 24003.038] (EE) 5: /usr/bin/X (0x7f30c853e000+0x1474b8) [0x7f30c86854b8]
[ 24003.038] (EE) 6: /usr/bin/X (0x7f30c853e000+0x557a1) [0x7f30c85937a1]
[ 24003.038] (EE) 7: /usr/bin/X (0x7f30c853e000+0x4415a) [0x7f30c858215a]
[ 24003.038] (EE) 8: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xed) [0x7f30c64ea76d]
[ 24003.038] (EE) 9: /usr/bin/X (0x7f30c853e000+0x444b1) [0x7f30c85824b1]
[ 24003.038] (EE)
[ 24003.038] (EE) Segmentation fault at address 0x28
[ 24003.038]
Fatal server error:
[ 24003.038] Caught signal 11 (Segmentation fault). Server aborting
[ 24003.038]
[ 24003.038] (EE)
Please consult the The X.Org Foundation support
  at http://wiki.x.org
 for help.
[ 24003.038] (EE) Please also check the log file at "/var/log/Xorg.1.log" for additional information.
[ 24003.038] (EE)
[ 24003.039] (II) evdev: Power Button: Close
[ 24003.039] (II) UnloadModule: "evdev"
[ 24003.039] (II) evdev: Video Bus: Close
[ 24003.039] (II) UnloadModule: "evdev"
[ 24003.040] (II) evdev: Video Bus: Close
[ 24003.040] (II) UnloadModule: "evdev"
[ 24003.040] (II) evdev: Power Button: Close
[ 24003.040] (II) UnloadModule: "evdev"
[ 24003.040] (II) evdev: Sleep Button: Close
[ 24003.040] (II) UnloadModule: "evdev"
[ 24003.041] (II) evdev: Laptop_Integrated_Webcam_2HDM: Close
[ 24003.041] (II) UnloadModule: "evdev"
[ 24003.041] (II) evdev: Logitech USB Optical Mouse: Close
[ 24003.041] (II) UnloadModule: "evdev"
[ 24003.041] (II) evdev: AT Translated Set 2 keyboard: Close
[ 24003.041] (II) UnloadModule: "evdev"
[ 24003.044] (II) evdev: Dell WMI hotkeys: Close
[ 24003.044] (II) UnloadModule: "evdev"
[ 24003.044] (II) UnloadModule: "synaptics"
[ 24003.044] (II) AIGLX: Suspending AIGLX clients for VT switch
[ 24003.596] Server terminated with error (1). Closing log file.

Please reopen the bug !