Xorg crashed (logging out and back in)

Bug #1365232 reported by Eliah Kagan on 2014-09-04
10
This bug affects 1 person
Affects Status Importance Assigned to Milestone
xorg-server (Ubuntu)
Medium
Unassigned

Bug Description

Xorg (xserver-xorg 1:7.7+1ubuntu8) crashed on an Ubuntu MATE (Utopic) amd64 system. Apport informed me of the crash when I logged in. I had just logged out and back in.

At the time I was using this system to verify the correct behavior of pam_env.so against another system on which it is not working. I had set unimportant environment variables (FOO and BAR) in ~/.pam_environment, changed them, and removed the file (which was otherwise empty). I did this across a few graphical sessions, all within a few minutes of one another.

I suspect that is not what triggered this crash but I'm not sure.

Recently I have some kernel messages which may or may not be related to whatever triggered this crash:

[ 853.112643] systemd-logind[1038]: New session c10 of user lightdm.
[ 858.538808] init: tty1 main process ended, respawning
[ 858.554498] systemd-logind[1038]: Failed to abandon scope session-c2.scope
[ 858.554583] systemd-logind[1038]: Failed to abandon session scope: No such interface 'org.freedesktop.systemd1.Scope' on object at path /org/freedesktop/systemd1/unit/session_2dc2_2escope
[ 1118.816570] systemd-logind[1038]: Failed to abandon scope session-c10.scope
[ 1118.816582] systemd-logind[1038]: Failed to abandon session scope: No such interface 'org.freedesktop.systemd1.Scope' on object at path /org/freedesktop/systemd1/unit/session_2dc10_2escope
[ 1118.826320] systemd-logind[1038]: New session c11 of user ek.
[ 1689.808829] audit: type=1400 audit(1409798550.085:26): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/lib/cups/backend/cups-pdf" pid=6369 comm="apparmor_parser"
[ 1689.808841] audit: type=1400 audit(1409798550.085:27): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/sbin/cupsd" pid=6369 comm="apparmor_parser"

I've attached the full output of 'dmesg' (dmesg.txt).

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 3.16.0-12-generic x86_64
ApportVersion: 2.14.7-0ubuntu1
Architecture: amd64
Date: Wed Sep 3 22:28:32 2014
ExecutablePath: /usr/bin/Xorg
InstallationDate: Installed on 2014-08-19 (15 days ago)
InstallationMedia: Ubuntu MATE 14.10 "Utopic Unicorn" - Alpha amd64 (20140731)
ProcCmdline: /usr/bin/X -core :0 -seat seat0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
ProcEnviron:

Signal: 6
SourcePackage: xorg-server
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

information type: Private → Public

StacktraceTop:
 RegionUninit (_pReg=<optimized out>) at /usr/include/xorg/regionstr.h:161
 RegionEmpty (_pReg=0x0) at /usr/include/xorg/regionstr.h:190
 vmwgfx_scanout_unref (entry=0x7f2e96ee9cc8) at ../../vmwgfx/vmwgfx_saa.c:1575
 xf86DisableUnusedFunctions (pScrn=0x7f2e96ee94c0) at ../../../../hw/xfree86/modes/xf86Crtc.c:2988
 xf86SetDesiredModes (scrn=scrn@entry=0x7f2e96ee94c0) at ../../../../hw/xfree86/modes/xf86Crtc.c:2772

Changed in xorg-server (Ubuntu):
importance: Undecided → Medium
tags: removed: need-amd64-retrace
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