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[Mondane <1247624@xxxxxxxxxxxxxxxxxx>]

Problem still persists in Ubuntu 15.04, this makes my conclusion that
it's indeed hardware. For me, the ticket can be closed.

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https://bugs.launchpad.net/bugs/1247624

Title:
  [Dell Inspiron 6400] Laptop screen is turned off, needs shutdown to
  work again

Status in linux package in Ubuntu:
  Triaged

Bug description:
  Ubuntu 13.10, release: 13.10
  xorg: Installed: 1:7.7+1ubuntu6

  Have you experienced just one lockup, or have you had a series of these lockups?
  - I had several lockups.

  If you've had several, how often does it occur? Every few hours? Once or twice a day? Couple times a week?
  - Couple times a week.

  When did you first notice it?
  - Around a year ago.

  Shortly after upgrading?
  - Can't remember, could be after the 12.10 upgrade.

  After updating?
  - Don't think so.

  After changing compositing (Desktop Effects) settings?
  - Never changed these.

  Under what conditions does it seem most likely to reproduce?
  - Undetermined, it happens during normal OS usage. It doesn't seem to happen when the laptop is idle.

  Only at boot time?
  - No, it can also happen after, let's say, several hours of working on the laptop.

  When resuming from suspend or hibernate?
  - I never suspend or hibernate the laptop.

  Only when using compositing (Unity, et al)
  Yes, it never happened when in a tty.

  When changing resolution or enabling/disabling monitors
  - I don't change the resolution or enable/disable monitors.

  When the screensaver (or power saving mode) kicks in
  - The laptop continues working properly when the screensaver or power saving mode kicks in.

  Visiting particular web pages or loading particular files
  - Not a particular web page, but it happens when I use FireFox, Google Chrome or Thunderbird.

  Switching between desktops
  - I never do this.

  When performing a specific sequence of actions (List them!)
  - I don't have a reproducable situation.
  --- 
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.0.1-0ubuntu17.4
  Architecture: i386
  CasperVersion: 1.315.1
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  DistUpgraded: Fresh install
  DistroCodename: precise
  DistroRelease: Ubuntu 12.04
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes,
  GraphicsCard:
   Advanced Micro Devices [AMD] nee ATI M52 [Mobility Radeon X1300] [1002:7149] (prog-if 00 [VGA controller])
     Subsystem: Dell Device [1028:2003]
  LiveMediaBuild: Ubuntu 12.04.3 LTS "Precise Pangolin" - Release i386 (20130820.1)
  MachineType: Dell Inc. MM061
  MarkForUpload: True
  Package: xorg 1:7.6+12ubuntu2
  PackageArchitecture: i386
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: noprompt cdrom-detect/try-usb=true file=/cdrom/preseed/hostname.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
  ProcVersionSignature: Ubuntu 3.8.0-29.42~precise1-generic 3.8.13.5
  Tags:  precise ubuntu referred-by-support compiz-0.9
  Uname: Linux 3.8.0-29-generic i686
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  dmi.bios.date: 03/09/2006
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A03
  dmi.board.name: 0XD720
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA03:bd03/09/2006:svnDellInc.:pnMM061:pvr:rvnDellInc.:rn0XD720:rvr:cvnDellInc.:ct8:cvr:
  dmi.product.name: MM061
  dmi.sys.vendor: Dell Inc.
  version.compiz: compiz 1:0.9.7.12-0ubuntu2
  version.libdrm2: libdrm2 2.4.43-0ubuntu0.0.2
  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

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