*** This bug is a duplicate of bug 1421808 ***
    https://bugs.launchpad.net/bugs/1421808

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: xorg-server (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1774635

Title:
  Xorg crashes - SIGABRT - after resuming from suspend

Status in xorg-server package in Ubuntu:
  Confirmed

Bug description:
  In the last months, Xorg started crashing randomly after I resume from sleep. 
  I've installed Xubuntu 18.04 from scratch (keeping only the /home partition) 
hoping that the problem would be gone. But it isn't. 

  It seems to be related to the external monitor - ie when there is an
  external monitor plugged in and I suspend the computer, and when I
  resume there's only the laptop. But it doesn't always happen, so I
  don't have clear steps for reproducing.

  ProblemType: Crash
  DistroRelease: Ubuntu 18.04
  Package: xserver-xorg-core 2:1.19.6-1ubuntu4
  ProcVersionSignature: Ubuntu 4.15.0-22.24-generic 4.15.17
  Uname: Linux 4.15.0-22-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.1
  Architecture: amd64
  CompizPlugins: No value set for 
`/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: None
  CrashCounter: 1
  Date: Thu May 31 18:01:17 2018
  DistUpgraded: Fresh install
  DistroCodename: bionic
  DistroVariant: ubuntu
  DpkgLog:
   
  ExecutablePath: /usr/lib/xorg/Xorg
  ExecutableTimestamp: 1523633505
  GraphicsCard:
   Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] 
(rev 09) (prog-if 00 [VGA controller])
     Subsystem: Dell Haswell-ULT Integrated Graphics Controller [1028:05e3]
  InstallationDate: Installed on 2018-05-22 (10 days ago)
  InstallationMedia: Xubuntu 18.04 LTS "Bionic Beaver" - Release amd64 
(20180426)
  MachineType: Dell Inc. XPS 12-9Q33
  ProcCmdline: /usr/lib/xorg/Xorg -core :0 -seat seat0 -auth 
/var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
  ProcCwd: /
  ProcEnviron: PATH=(custom, no user)
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-22-generic 
root=UUID=0da52507-c787-46d7-9266-d53448c18283 ro quiet splash vt.handoff=1
  Signal: 6
  SourcePackage: xorg-server
  StacktraceTop:
   OsAbort ()
   ?? ()
   FatalError ()
   xf86VTEnter ()
   WakeupHandler ()
  Title: Xorg crashed with SIGABRT in OsAbort()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  dmi.bios.date: 03/03/2015
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A08
  dmi.board.asset.tag: 00000
  dmi.board.name: XPS 12-9Q33
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A08
  dmi.chassis.asset.tag: 00000
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: Not Specified
  dmi.modalias: 
dmi:bvnDellInc.:bvrA08:bd03/03/2015:svnDellInc.:pnXPS12-9Q33:pvrA08:rvnDellInc.:rnXPS12-9Q33:rvrA08:cvnDellInc.:ct8:cvrNotSpecified:
  dmi.product.name: XPS 12-9Q33
  dmi.product.version: A08
  dmi.sys.vendor: Dell Inc.
  version.compiz: compiz N/A
  version.libdrm2: libdrm2 2.4.91-2
  version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.0~rc5-1ubuntu1
  version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.0~rc5-1ubuntu1
  version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.0.1-1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 
2:2.99.917+git20171229-1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2

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