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[_the_mars_ <1354046@xxxxxxxxxxxxxxxxxx>]

Same issue on a Dell Latitude D6510. In Utopic and Trusty. I have seen
this from more than a half year ago.

If I lock my screen, sometimes there is no password field to unlock it. If I go back to the terminal (Ctrl-Alt-F1), then that message is showing up.
My solution is to login on the terminal and then killing compiz with:
    pkill -9 compiz
When I switch back to my locked screen (Ctrl-Alt-F7) I have a password field and I can unlock my screen.

I have done a reinstall (on 2014-11-15) to Trusty, because Utopic does
not work very well on this laptop. Issues with video playing and editing
and slow keyboard performance (autotype in Keepassx is too fast and
characters are not typed in the right order; in Google Chome typing is
sometimes impossible; mssh is not working).

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https://bugs.launchpad.net/bugs/1354046

Title:
  no 3d acceleration with error [drm:intel_dp_start_link_train] *ERROR*
  too many full retries, give up

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

Bug description:
  Description:
  3D games, video (especially flash) makes computer unresponsive. The problem has been present since upgrade to Utopic, but have recently become worse, maybe  because of error message

  [drm:intel_dp_start_link_train] *ERROR* too many full retries, give up

  which appears in all terminals.

  How to reproduce:
  Start a 1080p video. e.g. Note that the video is not run from an encrypted folder.
  Or watch a video on youtube.
  Reproducable for new users as well, so not related to /home/$USER

  What happens:
  Usage on all four CPUs on my DELL XPS 13 DEVELOPER EDITION will be between 30% and 100%.

  What I expected:
  Expected same 3D performance as on Thrusty.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: xorg 1:7.7+1ubuntu8
  ProcVersionSignature: Ubuntu 3.16.0-6.11-generic 3.16.0-rc7
  Uname: Linux 3.16.0-6-generic x86_64
  .tmp.unity.support.test.0:

  ApportVersion: 2.14.5-0ubuntu3
  Architecture: amd64
  BootLog:
   Scanning for Btrfs filesystems
    * Setting up X socket directories...       
  [ OK ]
  CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  CurrentDesktop: Unity
  Date: Thu Aug  7 17:03:51 2014
  DistUpgraded: Fresh install
  DistributionChannelDescriptor:
   # This is a distribution channel descriptor
   # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
   canonical-oem-somerville-precise-amd64-20120703-2
  DistroCodename: utopic
  DistroVariant: ubuntu
  DkmsStatus:
   vboxhost, 4.3.12, 3.13.0-24-generic, x86_64: installed
   vboxhost, 4.3.12, 3.13.0-27-generic, x86_64: installed
   vboxhost, 4.3.12, 3.13.0-29-generic, x86_64: installed
   vboxhost, 4.3.12, 3.16.0-5-generic, x86_64: installed
   vboxhost, 4.3.12, 3.16.0-6-generic, x86_64: installed
  EcryptfsInUse: Yes
  ExtraDebuggingInterest: Yes
  GraphicsCard:
   Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: Dell Device [1028:058b]
  InstallationDate: Installed on 2013-08-27 (345 days ago)
  InstallationMedia: Ubuntu 12.04 "Precise" - Build amd64 LIVE Binary 20120703-15:08
  MachineType: Dell Inc. Dell System XPS L322X
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-6-generic root=UUID=221de9c1-f10a-4be4-9273-5c12864c8680 ro quiet splash vt.handoff=7
  SourcePackage: xorg
  Symptom: display
  SystemImageInfo: Error: [Errno 2] No such file or directory: 'system-image-cli'
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 05/15/2013
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A09
  dmi.board.name: 0PJHXN
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: 0.1
  dmi.modalias: dmi:bvnDellInc.:bvrA09:bd05/15/2013:svnDellInc.:pnDellSystemXPSL322X:pvr:rvnDellInc.:rn0PJHXN:rvrA00:cvnDellInc.:ct8:cvr0.1:
  dmi.product.name: Dell System XPS L322X
  dmi.sys.vendor: Dell Inc.
  version.compiz: compiz 1:0.9.11+14.10.20140707-0ubuntu1b1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.54-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.2.3-0ubuntu1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental 10.0.0-1ubuntu2
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.2.3-0ubuntu1
  version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu9
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu1
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.4.0-2ubuntu1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.914-1~exp1ubuntu1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
  xserver.bootTime: Thu Aug  7 16:54:59 2014
  xserver.configfile: default
  xserver.errors:
   intel: Failed to load module "dri3" (module does not exist, 0)
   intel: Failed to load module "present" (module does not exist, 0)
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                                4933
   vendor                                     CMN
  xserver.version: 2:1.15.1-0ubuntu9

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