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[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

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

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https://bugs.launchpad.net/bugs/1344098

Title:
  continuously receive the message [drm:radeon_acpi_init] "ERROR" Cannot
  find a backlight controller

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  continuously receive the message [drm:radeon_acpi_init] "ERROR" Cannot
  find a backlight controller

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-32-generic 3.13.0-32.57
  ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
  Uname: Linux 3.13.0-32-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  lansilot   2692 F.... pulseaudio
   /dev/snd/controlC0:  lansilot   2692 F.... pulseaudio
  CurrentDesktop: Unity
  CurrentDmesg:
   [   23.690772] vgaarb: device changed decodes: PCI:0000:00:01.0,olddecodes=io+mem,decodes=none:owns=none
   [   25.111435] init: plymouth-upstart-bridge main process ended, respawning
   [   25.130730] init: plymouth-upstart-bridge main process ended, respawning
   [   29.990447] [drm] Disabling audio 0 support
   [   30.215814] pciehp 0000:00:02.0:pcie04: Card not present on Slot(0)
  Date: Fri Jul 18 18:53:35 2014
  HibernationDevice: RESUME=UUID=354b89f7-d237-403d-8942-f78edbd6da2a
  InstallationDate: Installed on 2014-07-15 (2 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  MachineType: Hewlett-Packard HP ProBook 4545s
  ProcFB:
   0 radeondrmfb
   1 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-32-generic root=UUID=803c4bdd-2ebb-41eb-bd69-b2f8749e53e2 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-32-generic N/A
   linux-backports-modules-3.13.0-32-generic  N/A
   linux-firmware                             1.127.4
  RfKill:
   0: phy0: Wireless LAN
   	Soft blocked: yes
   	Hard blocked: no
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 10/07/2013
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: 68CPD Ver. F.44
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 17ED
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: KBC Version 54.20
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.modalias: dmi:bvnHewlett-Packard:bvr68CPDVer.F.44:bd10/07/2013:svnHewlett-Packard:pnHPProBook4545s:pvrA1018C1100:rvnHewlett-Packard:rn17ED:rvrKBCVersion54.20:cvnHewlett-Packard:ct10:cvr:
  dmi.product.name: HP ProBook 4545s
  dmi.product.version: A1018C1100
  dmi.sys.vendor: Hewlett-Packard

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