apport information

** Attachment added: "JournalErrors.txt"
   
https://bugs.launchpad.net/bugs/1640146/+attachment/4778549/+files/JournalErrors.txt

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https://bugs.launchpad.net/bugs/1640146

Title:
  Xserver crashes (SIGABRT) when switching tty

Status in xorg-server package in Ubuntu:
  New

Bug description:
  I have both XFCE and Unity 7 running at the same time. XFCE uses the
  display :1 and U7 the display :0. If I switch from the u7 tty to the
  xfce tty xserver crashes and here's the backtrace:

  (gdb) bt
  #0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:58
  #1  0x00007f34658a23ea in __GI_abort () at abort.c:89
  #2  0x0000562392d1f53e in OsAbort ()
  #3  0x0000562392d251d3 in ?? ()
  #4  0x0000562392d25fbd in FatalError ()
  #5  0x0000562392bf5246 in xf86VTEnter ()
  #6  0x0000562392bb6f8d in WakeupHandler ()
  #7  0x0000562392d15759 in WaitForSomething ()
  #8  0x0000562392bb21ee in ?? ()
  #9  0x0000562392bb6413 in ?? ()
  #10 0x00007f346588b3f1 in __libc_start_main (main=0x562392ba0300, argc=11, 
      argv=0x7ffd2e525d08, init=<optimized out>, fini=<optimized out>, 
      rtld_fini=<optimized out>, stack_end=0x7ffd2e525cf8)
      at ../csu/libc-start.c:291
  #11 0x0000562392ba033a in _start ()

  --------

  Xserver version:

  $ Xorg -version

  X.Org X Server 1.18.4
  Release Date: 2016-07-19
  X Protocol Version 11, Revision 0
  Build Operating System: Linux 3.13.0-95-generic x86_64 Ubuntu
  Current Operating System: Linux tiktok 4.8.0-26-generic #28-Ubuntu SMP Tue 
Oct 18 14:39:52 UTC 2016 x86_64
  Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.8.0-26-generic 
root=UUID=045392ae-75f8-47cf-9645-43be94987e8e ro quiet splash vt.handoff=7
  Build Date: 07 September 2016  05:11:52AM
  xorg-server 2:1.18.4-1ubuntu6 (For technical support please see 
http://www.ubuntu.com/support) 

  The Xorg.0.log doesn't show any errors.
  --- 
  .tmp.unity_support_test.0:
   
  ApportVersion: 2.20.3-0ubuntu8
  Architecture: amd64
  BootLog:
   
  CompizPlugins: No value set for 
`/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  CurrentDesktop: Unity
  DistUpgraded: Fresh install
  DistroCodename: yakkety
  DistroRelease: Ubuntu 16.10
  DistroVariant: ubuntu
  DkmsStatus:
   tp_smapi, 0.42, 4.4.0-45-generic, x86_64: installedError! Could not locate 
dkms.conf file.
   File:  does not exist.
   
   tp_smapi, 0.42, 4.8.0-26-generic, x86_64: installed
  ExtraDebuggingInterest: Yes
  GraphicsCard:
   Intel Corporation HD Graphics 5500 [8086:1616] (rev 09) (prog-if 00 [VGA 
controller])
     Subsystem: Lenovo HD Graphics 5500 [17aa:2226]
  InstallationDate: Installed on 2016-03-15 (246 days ago)
  InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  MachineType: LENOVO 20CMCT01WW
  Package: xorg-server (not installed)
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.8.0-26-generic 
root=UUID=045392ae-75f8-47cf-9645-43be94987e8e ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 4.8.0-26.28-generic 4.8.0
  Tags:  yakkety ubuntu compiz-0.9
  Uname: Linux 4.8.0-26-generic x86_64
  UnreportableReason: The report belongs to a package that is not installed.
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip kvm libvirt libvirtd lightdm lpadmin plugdev pulse 
pulse-access sambashare sudo vboxusers
  _MarkForUpload: False
  dmi.bios.date: 04/06/2015
  dmi.bios.vendor: LENOVO
  dmi.bios.version: N10ET33W (1.12 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20CMCT01WW
  dmi.board.vendor: LENOVO
  dmi.board.version: 0B98417 WIN
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: None
  dmi.modalias: 
dmi:bvnLENOVO:bvrN10ET33W(1.12):bd04/06/2015:svnLENOVO:pn20CMCT01WW:pvrThinkPadX250:rvnLENOVO:rn20CMCT01WW:rvr0B98417WIN:cvnLENOVO:ct10:cvrNone:
  dmi.product.name: 20CMCT01WW
  dmi.product.version: ThinkPad X250
  dmi.sys.vendor: LENOVO
  version.compiz: compiz 1:0.9.13.0+16.10.20160818.2-0ubuntu2
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.70-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 12.0.3-1ubuntu2
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 12.0.3-1ubuntu2
  version.xserver-xorg-core: xserver-xorg-core 2:1.18.4-1ubuntu6
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.2-1ubuntu1
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.1-1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 
2:2.99.917+git20160706-1ubuntu1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-2

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