Xorg crashed with black screen after clicking on notification from thunderbird

[Feanor]

Binary package hint: gdm

I clicked on a notification from thunderbird and after that my screen went black. i tried raising the sḱinny elephant but nothing happend.

i found following error in syslog with matching time(last message before reboot(reset button))
Mar 21 20:02:11 gdm[2969]: WARNING: gdm_slave_xioerror_handler: Schwerwiegender X-Fehler - :0 wird neu gestartet
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lsb_release -rd
Description: Ubuntu jaunty (development branch)
Release: 9.04

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apt-cache policy gdm thunderbird
gdm:
  Installiert: 2.20.10-0ubuntu1
  Kandidat: 2.20.10-0ubuntu1
  Versions-Tabelle:
 *** 2.20.10-0ubuntu1 0
        500 http://at.archive.ubuntu.com jaunty/main Packages
        100 /var/lib/dpkg/status
thunderbird:
  Installiert: 2.0.0.21+nobinonly-0ubuntu1
  Kandidat: 2.0.0.21+nobinonly-0ubuntu1
  Versions-Tabelle:
 *** 2.0.0.21+nobinonly-0ubuntu1 0
        500 http://at.archive.ubuntu.com jaunty/main Packages
        100 /var/lib/dpkg/status

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[[e-mail] (j.scott.gwin)]

Thank you for reporting this issue, it helps make Ubuntu better. Please answer a couple of questions.

1. Is the problem reproducible?
2. What are the steps we need to take to reproduce this error?

This will help. In the meantime, I will mark this bug as incomplete.

[Feanor (michael.pusterhofer)]

i tried sending me a mail to force a thunderbird notification. then i clicked at it like the last time but nothing went wrong. -> not reproducible, so far...

[Chris Coulson (chrisccoulson)]

That message is most likely an Xorg crash, rather than a GDM bug. Please attach your /var/log/Xorg.0.log and /var/log/Xorg.0.log.old straight after you experience this again. Also please try to obtain a backtrace, following the instructions at https://wiki.ubuntu.com/X/Backtracing

[Bremm (bremm)]

Please check if bug #342324 isn't a duplicate.

[Chris Coulson (chrisccoulson)]

There is nothing to suggest that's a duplicate, other than the common message "gdm_slave_xioerror_handler", which is a generic and quite meaningless error message.