Xorg crashed with SIGABRT in OsAbort()

[Wangermée Guy]

This happened when I wanted to take off the ubuntu dock extension under the Xorg session.

ProblemType: Crash
DistroRelease: Ubuntu 17.10
Package: xserver-xorg-core 2:1.19.3-1ubuntu6
ProcVersionSignature: Ubuntu 4.13.0-12.13-generic 4.13.3
Uname: Linux 4.13.0-12-generic i686
.tmp.unity_support_test.0:

ApportVersion: 2.20.7-0ubuntu2
Architecture: i386
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
Date: Fri Sep 29 10:44:50 2017
DistUpgraded: 2017-09-26 09:59:44,631 DEBUG icon theme changed, re-reading
DistroCodename: artful
DistroVariant: ubuntu
ExecutablePath: /usr/lib/xorg/Xorg
ExtraDebuggingInterest: No
GraphicsCard:
 Intel Corporation Core Processor Integrated Graphics Controller [8086:0046] (rev 02) (prog-if 00 [VGA controller])
   Subsystem: Lenovo Core Processor Integrated Graphics Controller [17aa:215a]
InstallationDate: Installed on 2016-05-13 (507 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release i386 (20160420.1)
MachineType: LENOVO 3626AC9
ProcCmdline: /usr/lib/xorg/Xorg -core :0 -seat seat0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
ProcEnviron: PATH=(custom, no user)
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-12-generic root=UUID=ec9530a0-ae18-4ab4-a6f4-b46c2e0f97c4 ro quiet splash vt.handoff=7
Signal: 6
SourcePackage: xorg-server
StacktraceTop:
 OsAbort ()
 ?? ()
 FatalError ()
 CreateWellKnownSockets ()
 ?? ()
Title: Xorg crashed with SIGABRT in OsAbort()
UpgradeStatus: Upgraded to artful on 2017-09-26 (6 days ago)
UserGroups:

dmi.bios.date: 10/11/2012
dmi.bios.vendor: LENOVO
dmi.bios.version: 6QET70WW (1.40 )
dmi.board.name: 3626AC9
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr6QET70WW(1.40):bd10/11/2012:svnLENOVO:pn3626AC9:pvrThinkPadX201:rvnLENOVO:rn3626AC9:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.family: ThinkPad X201
dmi.product.name: 3626AC9
dmi.product.version: ThinkPad X201
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.13.1+17.10.20170901-0ubuntu1
version.libdrm2: libdrm2 2.4.82-1
version.libgl1-mesa-dri: libgl1-mesa-dri 17.2.1-0ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx 17.2.1-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.19.3-1ubuntu6
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.5-1ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.9.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20170309-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2
xserver.bootTime: Mon Oct 2 17:03:35 2017
xserver.configfile: default
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.19.3-1ubuntu6
xserver.video_driver: modeset

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #1546541, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.