ubuntu-x-swat team mailing list archive

[Harald Sitter <apachelogger@xxxxxxxxxx>]

Public bug reported:

This report is based on a bug hunt I did on a system maintained by
~ericbouer.

Apparently the system was setup about a week ago and after some recent
update, login was never successful and always resulted in an immediate
bounce back to KDM.

After a lot of investigation it became apparent that 
  xsetroot -cursor_name left_ptr
as part of the startkde script was causing a X crash. However, the command itself could not be used to reproduce the crash, it seems as if only the preceding commands in startkde make it a deadly one. Removing aforementioned line prevents the crash, re-adding it makes the crash again 100% reproducible.

Reinstalling x11-xserver-utils, which contains xsetroot, did also not
improve the situation. Only removing xsetroot from startkde makes logins
possible again.

Attached to this report you find:
* gdb-Xorg.txt - backtrace per https://wiki.ubuntu.com/X/Backtracing X started with -dumbSched, otherweise trace were unsuccessful
* .xsession-errors of two different users, in one the xprop commands in startkde were commented out (which turned out to not improve the situation)
* Xorg.0.log, Xorg.0.log.old, kdm.log, dpkg.log
* Output of dmesg and lspci -vvk

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

-- 
[Karmic] X crash due to xsetroot in startkde after recent update
https://bugs.launchpad.net/bugs/526919
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