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[Sslaxx <1397553@xxxxxxxxxxxxxxxxxx>]

As of the latest kernel update (3.16.0-28.38) I am still getting this
error happening.

My graphics hardware is an AMD Radeon HD 6670 using the open source
drivers. Sabertooth 990FX R2.0 motherboard.

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https://bugs.launchpad.net/bugs/1397553

Title:
  1002:9802 The Linux kernel is no longer able to page the graphics
  processor, making the system to boot with a blank screen

Status in linux package in Ubuntu:
  Triaged
Status in linux source package in Utopic:
  Triaged

Bug description:
  ******************
   HOW TO REPRODUCE 
  ******************
  1. Upgrade the system.
  2. Install an affected graphics processor in your system.

  ********************
   EXPECTED BEHAVIOUR 
  ********************
  - The system to boot normally.

  ****************
   REAL BEHAVIOUR 
  ****************
  - After showing the splash screen, the monitor doesn't detect any signal and goes blank.

  ************
   WORKAROUND 
  ************
  1. In the "Terminal" application, enter the following line: sudo cp /etc/default/grub /etc/default/grub.bak && sudo gedit /etc/default/grub

  2. In the text editor window that will open, change <GRUB_DEFAULT=0>
  to <GRUB_DEFAULT="Advanced options for Ubuntu>Ubuntu, with Linux
  3.16.0-25-generic">. Save the file, and close the window.

  3. In the Terminal, enter <sudo update-grub>.

  *******************
   TECHNICAL DETAILS 
  *******************
  ProblemType: KernelOops
  DistroRelease: Ubuntu 14.10
  Package: linux-image-3.16.0-26-generic 3.16.0-26.34
  ProcVersionSignature: Ubuntu 3.16.0-26.34-generic 3.16.7-ckt1
  Uname: Linux 3.16.0-26-generic x86_64
  Annotation: Your system might become unstablenow and might need to be restarted.
  ApportVersion: 2.14.7-0ubuntu8
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  bill      12160 F.... pulseaudio
   /dev/snd/controlC0:  bill      12160 F.... pulseaudio
  Date: Thu Nov 27 13:56:47 2014
  DuplicateSignature: BUG: unable to handle kernel paging request at location RIP: 0010:location  location kfree+0x56/0x150
  Failure: oops
  HibernationDevice: RESUME=UUID=d06d77c1-468d-41ec-8365-bdbd9dd870ed
  InstallationDate: Installed on 2014-09-21 (66 days ago)
  InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Alpha amd64 (20140921)
  MachineType: MotherBoard By ZOTAC MotherBoard Fusion350-B-B/E/J/U
  ProcFB:

  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-26-generic root=UUID=ca668714-f82b-4132-afea-4ae2931e8f56 ro recovery nomodeset
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions: kerneloops-daemon 0.12+git20090217-3ubuntu8
  RfKill:
   0: phy0: Wireless LAN
    Soft blocked: yes
    Hard blocked: no
  SourcePackage: linux
  Title: BUG: unable to handle kernel paging request at ffffec2000000900
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 11/14/2011
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 4.6.4
  dmi.board.asset.tag: NA
  dmi.board.name: Fusion350-B-B/E/J/U
  dmi.board.vendor: ZOTAC
  dmi.board.version: 01
  dmi.chassis.asset.tag: NA
  dmi.chassis.type: 3
  dmi.chassis.vendor: NA
  dmi.chassis.version: NA
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.4:bd11/14/2011:svnMotherBoardByZOTAC:pnMotherBoardFusion350-B-B/E/J/U:pvrMotherBoard01:rvnZOTAC:rnFusion350-B-B/E/J/U:rvr01:cvnNA:ct3:cvrNA:
  dmi.product.name: MotherBoard Fusion350-B-B/E/J/U
  dmi.product.version: MotherBoard 01
  dmi.sys.vendor: MotherBoard By ZOTAC

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