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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/1264389

Title:
  Screen dims unexpectedly then stays dim until adjusted

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  Expected behaviour:
  1) When "AC" power connected, screen does not dim.
  2) "When System Settings->Brightness and Lock->Dim screen to save power" is unchecked, screen does not dim
  3) When (1) and (2) are false, screen dims after a period of inactivity
  4) When keyboard or mouse activity, screen will undim.

  Behaviour after upgrade to 13.10
  1) Screen dims randomly when AC power is connected, seemly after inactivity
  2) Screen dims instantly if AC power is disconnected then reconnected
  3) Screen does not undim on mouse movement or keypresses
  4) Opening or clicking on the brightness and lock menu undims the screen.
  5) "Dim screen to save power" setting makes no difference (other than that to adjust the setting, you cause condition 4)

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: linux-image-3.11.0-14-generic 3.11.0-14.21
  ProcVersionSignature: Ubuntu 3.11.0-14.21-generic 3.11.7
  Uname: Linux 3.11.0-14-generic x86_64
  ApportVersion: 2.12.5-0ubuntu2.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  dave       3034 F.... pulseaudio
                        dave      17396 F.... pulseaudio
  Date: Thu Dec 26 22:51:21 2013
  InstallationDate: Installed on 2013-06-24 (185 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
  MachineType: Hewlett-Packard HP Compaq 6530b (VC178ET#ABU)
  MarkForUpload: True
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.11.0-14-generic root=/dev/mapper/main-root ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.11.0-14-generic N/A
   linux-backports-modules-3.11.0-14-generic  N/A
   linux-firmware                             1.116
  SourcePackage: linux
  UpgradeStatus: Upgraded to saucy on 2013-12-25 (1 days ago)
  dmi.bios.date: 12/07/2011
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: 68PDD Ver. F.20
  dmi.board.name: 30DD
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: KBC Version 96.23
  dmi.chassis.asset.tag: CNU9492DHT
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.modalias: dmi:bvnHewlett-Packard:bvr68PDDVer.F.20:bd12/07/2011:svnHewlett-Packard:pnHPCompaq6530b(VC178ET#ABU):pvrF.20:rvnHewlett-Packard:rn30DD:rvrKBCVersion96.23:cvnHewlett-Packard:ct10:cvr:
  dmi.product.name: HP Compaq 6530b (VC178ET#ABU)
  dmi.product.version: F.20
  dmi.sys.vendor: Hewlett-Packard

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