Xorg crashed with SIGABRT in OsAbort()

[Slankbakfra]

Crashed when I turned on the laptop, having put it to Sleep (suspend to RAM) yesterday.

ProblemType: Crash
DistroRelease: Ubuntu 14.04
Package: xserver-xorg-core 2:1.15.0-1ubuntu7
ProcVersionSignature: Ubuntu 3.13.0-19.39-generic 3.13.6
Uname: Linux 3.13.0-19-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.13.3-0ubuntu1
Architecture: amd64
CrashCounter: 1
Date: Wed Mar 26 18:23:56 2014
ExecutablePath: /usr/bin/Xorg
InstallationDate: Installed on 2014-03-22 (4 days ago)
InstallationMedia: Kubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140227)
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:
 OsAbort ()
 ddxGiveUp ()
 ?? ()
 FatalError ()
 ?? ()
Title: Xorg crashed with SIGABRT in OsAbort()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

[Apport retracing service (apport)]

StacktraceSource:
 #0 0x00007ff906d22f79 in ?? ()
 #1 0x00007ff906d26388 in ?? ()
 #2 0x0000000000000020 in ?? ()
 #3 0x0000000000000000 in ?? ()
StacktraceTop:
 ?? ()
 ?? ()
 ?? ()
 ?? ()