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[James Tait <1441643@xxxxxxxxxxxxxxxxxx>]

Since it doesn't look like the bug report includes it, my display
information is:

jtait@gazpacho:~$ sudo lshw -numeric -C display
  *-display               
       description: VGA compatible controller
       product: 4th Gen Core Processor Integrated Graphics Controller [8086:416]
       vendor: Intel Corporation [8086]
       physical id: 2
       bus info: pci@0000:00:02.0
       version: 06
       width: 64 bits
       clock: 33MHz
       capabilities: msi pm vga_controller bus_master cap_list rom
       configuration: driver=i915 latency=0
       resources: irq:45 memory:f7800000-f7bfffff memory:e0000000-efffffff ioport:f000(size=64)

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https://bugs.launchpad.net/bugs/1441643

Title:
  lightdm crashes during normal operation with no obvious cause

Status in lightdm package in Ubuntu:
  New

Bug description:
  This has happened several times in the last few weeks, including twice
  yesterday. There is no obvious user action that triggers the crash:
  the first crash yesterday, I was composing an e-mail in the GMail pop-
  out editor; the second I was editing a config file on a remote server
  via SSH; previously, the crash has happened while I've been just
  reading something on the screen, not interacting with the computer at
  all.

  The symptoms are a non-responsive display, with the exception of the
  mouse pointer. I'm not even able to switch to a different vt -  just
  get a black screen. However, I *am* able to SSH into the machine, and
  when I did so yesterday I tried:

   * killing compiz
   * restarting the unity7 upstart job (my windows flashed briefly on the screen, then I got the login background)
   * restarting lightdm

  The latter action got me to a login prompt, where I was able to login
  and start a standard desktop session and, thankfully, resume my screen
  and tmux sessions and not lose any work.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: lightdm 1.12.3-0ubuntu1
  ProcVersionSignature: Ubuntu 3.16.0-30.40-generic 3.16.7-ckt3
  Uname: Linux 3.16.0-30-generic x86_64
  ApportVersion: 2.14.7-0ubuntu8.2
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Wed Apr  8 14:55:47 2015
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2014-07-04 (277 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  SourcePackage: lightdm
  UpgradeStatus: Upgraded to utopic on 2015-01-31 (66 days ago)

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