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[Rusty Shackleford <Shackleford071250@xxxxxxxxx>]

Attempted to move to the 14.04.3 HWE Stack today. The attempt failed:
packages had unmet dependencies. Since there is no definitive reason for
me to install the HWE Stack at this point I will not continue on this
path.

Might pursue building the kernel from that release though.
Any other suggestions on paths to debug this issue?

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https://bugs.launchpad.net/bugs/1437719

Title:
  [Dell Inspiron 5547] Black Screen on user switch

Status in xorg package in Ubuntu:
  New

Bug description:
  When switching users (primarly using Ctrl-Alt-F(7-10) the monitor will
  sometimes go black. This happens once or twice a day, although on
  occasion it doesn't occur for several days. It has occurred at least
  once a week since I installed Ubuntu 14.04.1. It seems to be more of a
  problem since moving to 14.04.2 - I did perform installation of the
  Utopic Kernel, X, and MesaGL packages, but this is only perception. At
  the same time I switched from Unity to Cinnamon (Jeremy Clarkson isn't
  the only dinosaur roaming the world) - but I have confirmed that just
  running Unity desktops is vunerable.

  The display can be restored by sudo service lightdm restart - run from
  an ssh login from another system.

  Steps to consistently reproduce the problem is simply to perform
  abusive user stress testing: switching from one user to another
  rapidly: as soon as the display switches go back to the other. Usually
  I can get a black screen with this method in under a minute with Unity
  desktops.

  I have the same issue with another system (Dell Vostro 3550) reported
  in Bug #1437557 - submitting a new defect since this is different
  hardware and even though the defects look the same there might be
  differences underneath the hood causing the problem.

  
  14.04.2 Trusty
  3.16.0-33-generic.
  I'll edit this report shortly with additional system info.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: xorg 1:7.7+1ubuntu8.1
  ProcVersionSignature: Ubuntu 3.16.0-33.44~14.04.1-generic 3.16.7-ckt7
  Uname: Linux 3.16.0-33-generic x86_64
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.14.1-0ubuntu3.8
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: None
  Date: Sat Mar 28 14:45:26 2015
  DistUpgraded: Fresh install
  DistroCodename: trusty
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes, if not too technical
  GraphicsCard:
   Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 0b) (prog-if 00 [VGA controller])
     Subsystem: Dell Device [1028:063e]
  InstallationDate: Installed on 2014-12-23 (95 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  MachineType: Dell Inc. Inspiron 5547
  ProcEnviron:
   LANGUAGE=en_US
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-33-generic root=UUID=6eb0eadb-81ed-43ee-aab3-e3fe6b37ca75 ro quiet splash vt.handoff=7
  SourcePackage: xorg
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/12/2014
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A05
  dmi.board.name: 0598GM
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: A05
  dmi.modalias: dmi:bvnDellInc.:bvrA05:bd08/12/2014:svnDellInc.:pnInspiron5547:pvrA05:rvnDellInc.:rn0598GM:rvrA00:cvnDellInc.:ct8:cvrA05:
  dmi.product.name: Inspiron 5547
  dmi.product.version: A05
  dmi.sys.vendor: Dell Inc.
  version.compiz: compiz 1:0.9.11.3+14.04.20150122-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.56-1~ubuntu2
  version.libgl1-mesa-dri: libgl1-mesa-dri N/A
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx N/A
  version.xserver-xorg-core: xserver-xorg-core N/A
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
  version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A
  version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A
  xserver.bootTime: Fri Mar 27 15:14:18 2015
  xserver.configfile: default
  xserver.errors:
   SynPS/2 Synaptics TouchPad: Read error 19
   SynPS/2 Synaptics TouchPad: Read error 19
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                                1110 
   vendor                                     LGD
  xserver.version: 2:1.16.0-1ubuntu1.2~trusty2

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