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[Paul C <paul@xxxxxxxxxxxxxxxxxx>]

apport information

** Attachment added: "BootDmesg.txt"
   https://bugs.launchpad.net/bugs/1367825/+attachment/4200734/+files/BootDmesg.txt

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https://bugs.launchpad.net/bugs/1367825

Title:
  Intel i915 video driver causing random crashes on i7 Z77 system

Status in “xserver-xorg-video-intel” package in Ubuntu:
  Confirmed

Bug description:
  Description:    Ubuntu 14.04.1 LTS
  Release:        14.04

  apt-cache policy xserver-xorg-video-intel
  xserver-xorg-video-intel:
    Installed: (none)
    Candidate: 2:2.99.910-0ubuntu1.1

  System: Shuttle XPC SZ77R5 with 32 GB of memory installed (x4 8GB matched kit of sticks).
  Processor: Intel(R) Core(TM) i7-3770K CPU @ 3.50GHz
  Kernel: 3.13.0-35-generic #62-Ubuntu SMP

  I am experiencng random lock-ups/crashes when using this system and
  the i915 video driver is active. This results in a fully corrupted
  screen and no ability to do anything. The only remedy is to restart
  the system by holding down the power button. I have tried a number of
  different ideas from different bug reports but they all seem to be
  different regarding the i915 driver. The screen corruption can be seen
  in the attached grab.

  My last resort to see if it was this driver being responsible was to
  remove it from the system and make use of the regular vesa drivers. I
  have been using the vesa driver for a week now with no further
  crashes.

  All memory sticks are confirmed as good. I have maxed out the memory
  running 8 different virtual machines to prove to myself there wasn't a
  bad stick of memory. Also memtest86+ does not show any faults.

  This problem has been apparent from kernel 3.2.x right up to not with
  3.13.x installed. At various points I did test with kernels from
  Liquorix to see if the problem was resolved (or in the kernel at all).
  The crashes have happened in Gnome and KDE with different window
  managers which suggests it's related to xserver (driver).

  The crashes can come at any time under any kind of load. Sometimes
  just scrolling a window or entering some text. The only constant seems
  to be that something on the screen has to change. If left alone with
  no interaction the machine would run just fine. I have used it
  remotely with X forwarding without problem.

  This definitely seems to be an i915 issue, or something closely related to it.
  --- 
  ApportVersion: 2.14.1-0ubuntu3.3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  crispy     3441 F.... pulseaudio
  CurrentDesktop: KDE
  DistroRelease: Ubuntu 14.04
  HibernationDevice: RESUME=UUID=789ed600-1127-4ac3-9a63-1e8f187636f1
  InstallationDate: Installed on 2013-01-06 (612 days ago)
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
  IwConfig:
   vboxnet0  no wireless extensions.
   
   eth0      no wireless extensions.
   
   lo        no wireless extensions.
  MachineType: Shuttle Inc. SZ77
  Package: linux (not installed)
  ProcFB: 0 VESA VGA
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-35-generic root=/dev/mapper/vg-root ro rootdelay=10 quiet splash nomdmonddf nomdmonisw nomdmonddf nomdmonisw
  ProcVersionSignature: Ubuntu 3.13.0-35.62-generic 3.13.11.6
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-35-generic N/A
   linux-backports-modules-3.13.0-35-generic  N/A
   linux-firmware                             1.127.5
  RfKill:
   0: hci0: Bluetooth
   	Soft blocked: no
   	Hard blocked: no
  Tags:  trusty
  Uname: Linux 3.13.0-35-generic x86_64
  UpgradeStatus: Upgraded to trusty on 2014-04-22 (141 days ago)
  UserGroups: adm cdrom dip fuse gdm lpadmin plugdev sambashare scanner sudo vboxusers
  _MarkForUpload: True
  dmi.bios.date: 05/14/2013
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 1.12
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: FZ77
  dmi.board.vendor: Shuttle Inc.
  dmi.board.version: 1.0
  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.:bvr1.12:bd05/14/2013:svnShuttleInc.:pnSZ77:pvr1.0:rvnShuttleInc.:rnFZ77:rvr1.0:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.name: SZ77
  dmi.product.version: 1.0
  dmi.sys.vendor: Shuttle Inc.

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