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[James Stewart Miller <1507160@xxxxxxxxxxxxxxxxxx>]

*** This bug is a duplicate of bug 1501248 ***
    https://bugs.launchpad.net/bugs/1501248

I am also getting the crash on a recently installed 15.10 ubuntu studio
(xfce4.12 window manager) with the nouveau driver on  a nvidia gtx 750
ti.

I installed the nvidia proprietary driver from nvidia's website, and
didn't see any problems, although I didn't use it for long.  One of the
problems that I had when I installed the proprietary driver was the I
couldn't seem to blacklist the nouveau driver - I would reboot after
editing blacklist.conf and the driver would still be there.  I ended up
removing xorg-xserver-video-nouveau just to remove it.

When I removed the proprietary driver and returned to the nouveau
driver, I again got the crash described above - the screens go blank and
then I am returned to the login screen.

I was also getting garbled text from the fonts.  Eventually, when I
unchecked 'anti-alias' in settings->appearance->fonts the problem more
or less disappeared, but occasionally it is possible to see that the
fonts are not rendering all of their parts in the same colour - in some
cases parts of the fonts are transparent.

I am just installing oibaf's updated ppa to see if this helps.

Cheers

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Packages, which is subscribed to xorg-server in Ubuntu.
https://bugs.launchpad.net/bugs/1507160

Title:
  Xorg crashed with SIGABRT in FreeClientResources()

Status in xorg-server package in Ubuntu:
  Confirmed

Bug description:
  Boot up latest Ubuntu 15.10.
  Nvidia 750 Ti
  2 monitors (hdmi & vga)
  booted to login screen first

  ProblemType: Crash
  DistroRelease: Ubuntu 15.10
  Package: xserver-xorg-core 2:1.17.2-1ubuntu9
  ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
  Uname: Linux 4.2.0-16-generic x86_64
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.19.1-0ubuntu2
  Architecture: amd64
  CasperVersion: 1.365
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  Date: Sat Oct 17 17:34:26 2015
  DistUpgraded: Fresh install
  DistroCodename: wily
  DistroVariant: ubuntu
  ExecutablePath: /usr/bin/Xorg
  GraphicsCard:
   NVIDIA Corporation GM107 [GeForce GTX 750 Ti] [10de:1380] (rev a2) (prog-if 00 [VGA controller])
     Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:3102]
  LiveMediaBuild: Ubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20151016)
  MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
  ProcCmdline: /usr/bin/X -core :0 -seat seat0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
  ProcEnviron:
   
  ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/hostname.seed boot=casper quiet splash ---
  Renderer: Software
  Signal: 6
  SourcePackage: xorg-server
  StacktraceTop:
   ?? ()
   ?? ()
   FreeClientResources ()
   CloseDownClient ()
   ?? ()
  Title: Xorg crashed with SIGABRT in FreeClientResources()
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  dmi.bios.date: 12/24/2013
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: P1.90
  dmi.board.name: B75 Pro3-M
  dmi.board.vendor: ASRock
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: To Be Filled By O.E.M.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP1.90:bd12/24/2013:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnB75Pro3-M:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.name: To Be Filled By O.E.M.
  dmi.product.version: To Be Filled By O.E.M.
  dmi.sys.vendor: To Be Filled By O.E.M.
  version.compiz: compiz 1:0.9.12.2+15.10.20151002-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.64-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 11.0.2-1ubuntu4
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 11.0.2-1ubuntu4
  version.xserver-xorg-core: xserver-xorg-core 2:1.17.2-1ubuntu9
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.2-1ubuntu1
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0+git20150819-0ubuntu1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20150808-0ubuntu4
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu3
  xserver.bootTime: Sat Oct 17 17:34:29 2015
  xserver.configfile: default
  xserver.devices:
   input        Power Button         KEYBOARD, id 6
   input        Power Button         KEYBOARD, id 7
   input        Webcam C110          KEYBOARD, id 8
   input        MOSART Semi. 2.4G Keyboard Mouse KEYBOARD, id 9
   input        MOSART Semi. 2.4G Keyboard Mouse KEYBOARD, id 10
  xserver.errors:
   Failed to load module "nvidia" (module does not exist, 0)
   Failed to load module "nvidia" (module does not exist, 0)
   AIGLX: reverting to software rendering
  xserver.logfile: /var/log/Xorg.0.log
  xserver.version: 2:1.17.2-1ubuntu9
  xserver.video_driver: nouveau

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