gdm freezes on startup

[Philipp Meyer]

Binary package hint: gdm

I have just installed Ubuntu 10.04 on my desktop machine. The first reboots were fine, but after installing fglrx drivers GDM freezes as it starts up. With autologin enabled, I get to see my mouse, the background and hear part of the start melody before everything freezes - I can't move the mouse or switch to a terminal.

With GDM autologin disabled, I just get to see the login background before it freezes. The problem also remains after removing the fglrx drivers.

I can start X without problems using startx. XDM as a login manager also works.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: gdm 2.30.0-0ubuntu5
ProcVersionSignature: Ubuntu 2.6.32-21.32-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-21-generic x86_64
NonfreeKernelModules: fglrx
Architecture: amd64
Date: Sun May 2 11:19:51 2010
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
ProcEnviron:
 PATH=(custom, user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: gdm

[Sebastien Bacher (seb128)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. Please try to obtain a backtrace following the instructions at http://wiki.ubuntu.com/DebuggingProgramCrash and upload the backtrace (as an attachment) to the bug report. This will greatly help us in tracking down your problem.

[Philipp Meyer (philipp-j-meyer)]

Thank you for the reply.

As the computer completely hangs (I can't switch to the console, Ctrl+C or reboot, just turn power off) I wasn't able to do a backtrace with gdb. However I got a log with Valgrind by ssh-ing from a remote machine up to the point of the freeze.

Also note the backtrace from the segmentation fault in the Xorg.1.log file above.

[Philipp Meyer (philipp-j-meyer)]

Error comes apparently from the Neo2 keyboard layout, which causes gdm to crash.

Bug is discussed on http://wiki.neo-layout.org/ticket/213 and http://forum.ubuntuusers.de/topic/neo-layout-in-lucid-10-4/, as well as the Neo mailing list.

Report can be closed here.

[dino99 (9d9)]

This version has expired