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[Launchpad Bug Tracker <1327466@xxxxxxxxxxxxxxxxxx>]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: xorg (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1327466

Title:
  on login, X goes to blank screen, regression in 14.04

Status in “xorg” package in Ubuntu:
  Confirmed

Bug description:
  Note: this occurs when booting the 14.04 desktop installer ISO as
  well, not just on the installed system.  Booting any of 13.10, 12.04
  or Fedora 20 does not exhibit the same problem on the same machines.

  For the installed system, after logging in, the desktop comes up and
  works for a few seconds (~10) and then the screen goes blank (and
  switches to power save).  Switching (Ctl-Alt-1) to a text console and
  back will sometimes bring the graphics display back, and sometimes
  won't.  When the display is restored, it exhibits one or more of the
  following:

  - popup  "could not switch the monitor configuration, could not set
  the configuration for CRTC 63"

  - executing "xrandr" (no arguments) causes the display resolution to
  flip between 1280x1024 and 1440x900

  - works for a short while, then goes black again

  Examination of the Xorg.0.log shows that during the initial blank
  screen time, X is rapidly cycling back and forth between those two
  resolutions:

  [    37.124] (II) intel(0): resizing framebuffer to 1280x1024
  [    37.128] (II) intel(0): switch to mode 1280x1024@76.0 on VGA1 using pipe 0, position (0, 0), rotation normal, reflection none
  [    37.476] (II) intel(0): resizing framebuffer to 1440x900
  [    37.476] (II) intel(0): switch to mode 1440x900@59.9 on VGA1 using pipe 0, position (0, 0), rotation normal, reflection none
  [    37.784] (II) intel(0): resizing framebuffer to 1280x1024
  [    37.785] (II) intel(0): switch to mode 1280x1024@76.0 on VGA1 using pipe 0, position (0, 0), rotation normal, reflection none
  [...]

  This has occurred with two machines (with similar hardware, Intel Core
  2 Duo with embedded graphics) connected to a particular monitor (a
  Lenovo L194, 4434-HB6).

  % apt-cache policy xorg
  xorg:
    Installed: 1:7.7+1ubuntu8
    Candidate: 1:7.7+1ubuntu8
    Version table:
   *** 1:7.7+1ubuntu8 0
          500 http://us.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
          100 /var/lib/dpkg/status

  
  I'm not sure if the EDID is included in the debug stuff; if not, here it is:
  % xrandr --prop
  Screen 0: minimum 320 x 200, current 1280 x 1024, maximum 32767 x 32767
  VGA1 connected primary 1280x1024+0+0 (normal left inverted right x axis y axis) 410mm x 257mm
  	EDID: 
  		00ffffffffffff0030ae521101010101
  		131201036c291a78eee5b5a355499927
  		135054afcf10314681c0818a818c8190
  		9500950f714f9a29a0d0518422305098
  		36009a011100001c000000fc004c3139
  		3420576964650a202020000000fd0032
  		4c1e510e000a202020202020000000ff
  		0036563644323531380a20202020006f
     1440x900       59.9 +   75.0  
     1280x1024      76.0*    75.0     72.0     70.0  
     1152x864       75.0  
     1280x720       60.0  
     1024x768       75.1     70.1     60.0  
     800x600        72.2     75.0     60.3     56.2  
     640x480        75.0     72.8     66.0     60.0  
     720x400        70.1  
  VIRTUAL1 disconnected (normal left inverted right x axis y axis)

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: xorg 1:7.7+1ubuntu8
  ProcVersionSignature: Ubuntu 3.13.0-27.50-generic 3.13.11
  Uname: Linux 3.13.0-27-generic x86_64
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  CurrentDesktop: Unity
  Date: Fri Jun  6 17:13:33 2014
  DistUpgraded: Fresh install
  DistroCodename: trusty
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes, including running git bisection searches
  GraphicsCard:
   Intel Corporation 4 Series Chipset Integrated Graphics Controller [8086:2e32] (rev 03) (prog-if 00 [VGA controller])
     Subsystem: Lenovo Device [17aa:305d]
  InstallationDate: Installed on 2014-05-28 (9 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  MachineType: LENOVO 0829F3U
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-27-generic root=UUID=97f50aaf-f549-4fcd-8135-3f6fdafd3737 ro quiet splash vt.handoff=7
  SourcePackage: xorg
  Symptom: display
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 07/21/2010
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 90KT15AUS
  dmi.board.asset.tag: To Be Filled By O.E.M.
  dmi.board.name: To be filled by O.E.M.
  dmi.board.vendor: LENOVO
  dmi.board.version: 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:bvnLENOVO:bvr90KT15AUS:bd07/21/2010:svnLENOVO:pn0829F3U:pvrThinkCentreM70e:rvnLENOVO:rnTobefilledbyO.E.M.:rvrTobefilledbyO.E.M.:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.name: 0829F3U
  dmi.product.version: ThinkCentre M70e
  dmi.sys.vendor: LENOVO
  version.compiz: compiz 1:0.9.11+14.04.20140409-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.52-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.0-4ubuntu5
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.0-4ubuntu5
  version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
  xserver.bootTime: Fri Jun  6 17:10:24 2014
  xserver.configfile: default
  xserver.devices:
   input        Power Button         KEYBOARD, id 6
   input        Power Button         KEYBOARD, id 7
   input        CHESEN PS2 to USB Converter KEYBOARD, id 8
   input        CHESEN PS2 to USB Converter KEYBOARD, id 9
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                                4434 
   vendor                                     LEN
  xserver.version: 2:1.15.1-0ubuntu2

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