Xorg crashed with SIGABRT in __GI___isnan()

[Michael Neuffer]

A manual startxfce4 works fine.
in contrast restarting lightdm just leads to a black display

ProblemType: Crash
DistroRelease: Ubuntu 14.10
Package: xserver-xorg-core 2:1.15.1-0ubuntu9
ProcVersionSignature: Ubuntu 3.16.0-12.18-generic 3.16.1
Uname: Linux 3.16.0-11-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.7-0ubuntu2
Architecture: amd64
Date: Thu Aug 28 11:53:07 2014
ExecutablePath: /usr/bin/Xorg
InstallationDate: Installed on 2014-05-30 (98 days ago)
InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2)
ProcCmdline: /usr/bin/X -core :0 -seat seat0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
ProcEnviron:

Signal: 6
SourcePackage: xorg-server
StacktraceTop:
 __GI___isnan (x=7,0632779330701141e-304) at ../sysdeps/ieee754/dbl-64/wordsize-64/s_isnan.c:28
 __GI_sigfillset (set=0xb82) at ../signal/sigfillset.c:33
 ?? ()
 ?? ()
Title: Xorg crashed with SIGABRT in __GI___isnan()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

[Apport retracing service (apport)]

StacktraceTop:
 __GI___isnan (x=7.0632779330701141e-304) at ../sysdeps/ieee754/dbl-64/wordsize-64/s_isnan.c:28
 __GI_sigfillset (set=0xb82) at ../signal/sigfillset.c:33
 ?? ()
 ?? ()

[Paul White (paulw2u)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. We are sorry that we do not always have the capacity to review all reported bugs in a timely manner.

Ubuntu 14.10 (utopic) reached end-of-life on July 23, 2015.

I'm setting the status of this bug to 'Incomplete' as it's not seen any activity for some time. If this is still an issue when using a currently maintained release of Ubuntu then please let us know which one(s) otherwise this bug report can be left to expire in approximately 60 days time.

[Launchpad Janitor (janitor)]

[Expired for xorg-server (Ubuntu) because there has been no activity for 60 days.]