The xserver logs are from running the machine with nomodeset, so they're
useless. You need to provide one without, and preferably without any
nvidia driver installed.

** Changed in: xorg (Ubuntu)
       Status: New => Incomplete

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1591472

Title:
  Xorg crashes immediately on login returning to greeter

Status in xorg package in Ubuntu:
  Incomplete

Bug description:
  ~ $ lsb_release -rd
  Description:  Ubuntu 16.04 LTS
  Release:      16.04
  ~ $ apt-cache policy nvidia-361 xorg
  nvidia-361:
    Installed: 361.42-0ubuntu2
    Candidate: 361.42-0ubuntu2
    Version table:
   *** 361.42-0ubuntu2 500
          500 http://mirror.internode.on.net/pub/ubuntu/ubuntu 
xenial/restricted amd64 Packages
          100 /var/lib/dpkg/status
  xorg:
    Installed: 1:7.7+13ubuntu3
    Candidate: 1:7.7+13ubuntu3
    Version table:
   *** 1:7.7+13ubuntu3 500
          500 http://mirror.internode.on.net/pub/ubuntu/ubuntu xenial/main 
amd64 Packages
          100 /var/lib/dpkg/status

  
  Boot machine and login with correct credentials.

  Expect a functioning X session with gnome.

  Instead immediately returned to greeter.

  Attempted to do backtracing, but this did not work because
  (presumably) of absence of ../sysdeps/unix/syscall-template.S and an
  error returned after staring gdb, `"/usr/bin/Xorg": not in executable
  format: File format not recognised'. Went ahead any way and gdb sees:

  ```
  <snip>
  Reading symbols from /usr/lib/xorg/modules/input/evdev_drv.so...(no debugging 
symbols found)...done.
  Reading symbols from /usr/lib/x86_64-linux-gnu/libmtdev.so.1...(no debugging 
symbols found)...done.
  Reading symbols from /usr/lib/x86_64-linux-gnu/libevdev.so.2...(no debugging 
symbols found)...done.
  Reading symbols from /usr/lib/xorg/modules/input/synaptics_drv.so...(no 
debugging symbols found)...done.
  0x00007fe59028acf3 in __select_nocancel ()
      at ../sysdeps/unix/syscall-template.S:84
  84      ../sysdeps/unix/syscall-template.S: No such file or directory.
  (gdb) cont
  Continuing.
  warning: Corrupted shared library list: 0x556edfb384d0 != 0x556edfba4c60
  warning: Corrupted shared library list: 0x556edfbc48c0 != 0x556edfb384d0

  Program received signal SIGTERM, Terminated.
  0x00007fe59028acf3 in __select_nocancel ()
      at ../sysdeps/unix/syscall-template.S:84
  84      in ../sysdeps/unix/syscall-template.S
  (gdb) cont
  Continuing.

  Program terminated with signal SIGKILL, Killed.
  The program no longer exists.
  ```

  If given instructions on how to get backtracking to work, will happily
  reattempt.

  Using nvidia-304 (current) is worse, crashing in the greeter. Nouveau
  is unusable due to lag and sluggishness.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: xorg 1:7.7+13ubuntu3
  ProcVersionSignature: Ubuntu 4.4.0-24.43-generic 4.4.10
  Uname: Linux 4.4.0-24-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia_modeset nvidia
  .proc.driver.nvidia.gpus.0000.01.00.0: Error: [Errno 21] Is a directory: 
'/proc/driver/nvidia/gpus/0000:01:00.0'
  .proc.driver.nvidia.registry: Binary: ""
  .proc.driver.nvidia.version:
   NVRM version: NVIDIA UNIX x86_64 Kernel Module  361.42  Tue Mar 22 18:10:58 
PDT 2016
   GCC version:  gcc version 5.3.1 20160413 (Ubuntu 5.3.1-14ubuntu2.1)
  ApportVersion: 2.20.1-0ubuntu2.1
  Architecture: amd64
  CompizPlugins: No value set for 
`/apps/compiz-1/general/screen0/options/active_plugins'
  Date: Sat Jun 11 17:46:17 2016
  DistUpgraded: Fresh install
  DistroCodename: xenial
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes, if not too technical
  GraphicsCard:
   Intel Corporation Skylake Integrated Graphics [8086:191b] (rev 06) (prog-if 
00 [VGA controller])
     Subsystem: CLEVO/KAPOK Computer Skylake Integrated Graphics [1558:6540]
   NVIDIA Corporation GM204M [GeForce GTX 970M] [10de:13d8] (rev a1) (prog-if 
00 [VGA controller])
     Subsystem: CLEVO/KAPOK Computer GM204M [GeForce GTX 970M] [1558:6540]
  InstallationDate: Installed on 2016-06-07 (3 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 
(20160420.1)
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 004: ID 5986:066d Acer, Inc 
   Bus 001 Device 003: ID 0cf3:e300 Atheros Communications, Inc. 
   Bus 001 Device 002: ID 1c7a:0603 LighTuning Technology Inc. 
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Notebook P65_P67RGRERA
  ProcEnviron:
   LANGUAGE=en_AU:en
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_AU.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-24-generic 
root=UUID=153d01ca-6817-4bd1-9ace-8a3a44586e7a ro nomodeset quiet splash
  SourcePackage: xorg
  Symptom: display
  Title: Xorg crash
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 01/27/2016
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 1.05.13
  dmi.board.asset.tag: Tag 12345
  dmi.board.name: P65_P67RGRERA
  dmi.board.vendor: Notebook
  dmi.board.version: Not Applicable
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: Notebook
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvr1.05.13:bd01/27/2016:svnNotebook:pnP65_P67RGRERA:pvrNotApplicable:rvnNotebook:rnP65_P67RGRERA:rvrNotApplicable:cvnNotebook:ct10:cvrN/A:
  dmi.product.name: P65_P67RGRERA
  dmi.product.version: Not Applicable
  dmi.sys.vendor: Notebook
  version.compiz: compiz 1:0.9.12.2+16.04.20160526-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.67-1ubuntu0.16.04.1
  version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2
  version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A
  version.xserver-xorg-core: xserver-xorg-core 2:1.18.3-1ubuntu2.2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 
2:2.99.917+git20160325-1ubuntu1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 
1:1.0.12-1build2
  xserver.bootTime: Sat Jun 11 17:45:04 2016
  xserver.configfile: default
  xserver.logfile: /var/log/Xorg.0.log
  xserver.version: 2:1.18.3-1ubuntu2.2

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