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[Bug 1070150] Re: Intermittent black screen or low graphics mode message


On 14.04, with an Intel graphics card, installing GDM  (and choosing
that as the default) instead of Lightdm worked for me. All of the
suggestions with 'sleep' or 'lightdm service restart' were useless for

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  Intermittent black screen or low graphics mode message

Status in Light Display Manager:
Status in “linux” package in Ubuntu:
  Fix Released

Bug description:
  Update - 01.19.13

  Some systems are intermittently booting to a black screen or message
  about low graphics mode but a graphical login display never loads.

  Multiple GPU's are affected. Intel HD graphics driver and ATI open
  source driver are confirmed to have the issue. Nvidia binary driver
  and Nouveau driver still unconfirmed.

  Multiple users are affected here:

  There are currently three known workarounds to this issue:
  1) Log in with CTRL+ALT+F1 and issue command "sudo service lightdm restart"
  2) Add some sleep to /etc/init/lightdm.conf
  3) Install and use GDM instead of lightdm

  lsb_release -rd
  Description:	Ubuntu 12.10
  Release:	12.10

  uname -a
  Linux matt-pc 3.5.0-17-generic #28-Ubuntu SMP Tue Oct 9 19:31:23 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: linux-image-3.5.0-17-generic 3.5.0-17.28
  ProcVersionSignature: Ubuntu 3.5.0-17.28-generic 3.5.5
  Uname: Linux 3.5.0-17-generic x86_64
  ApportVersion: 2.6.1-0ubuntu3
  Architecture: amd64
   /dev/snd/controlC0:  matt       2002 F.... pulseaudio
  Date: Mon Oct 22 20:55:29 2012
  HibernationDevice: RESUME=UUID=d9a43e39-0d27-4a5b-90ca-79dc0278afa2
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
  MachineType: System manufacturer System Product Name
   PATH=(custom, no user)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-17-generic root=UUID=85247ab4-6b7d-4d5a-a265-73b485861e24 ro quiet splash vt.handoff=7
   linux-restricted-modules-3.5.0-17-generic N/A
   linux-backports-modules-3.5.0-17-generic  N/A
   linux-firmware                            1.95
   0: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/16/2012
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 1606
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: P8Z77-V
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: Rev 1.xx
  dmi.chassis.asset.tag: Asset-1234567890
  dmi.chassis.type: 3
  dmi.chassis.vendor: Chassis Manufacture
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1606:bd08/16/2012:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnP8Z77-V:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.name: System Product Name
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer

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