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[Bug 1341161] Re: after resume screen back light is off

 

Luc Pionchon, thank you for reporting this and helping make Ubuntu
better. Could you please test the latest upstream kernel available from
the very top line at the top of the page (the release names are
irrelevant for testing, and please do not test the daily folder)
following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow
additional upstream developers to examine the issue.

If the test did not allow you to test to the issue (ex. you couldn't boot into the OS) please make a comment in your report about this, and continue to test the next most recent kernel version until you can test to the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags by clicking on the yellow circle with a black pencil icon, next to the word Tags, located at the bottom of the report description:
kernel-fixed-upstream
kernel-fixed-upstream-3.XY-rcZ

Where XY and Z are numbers corresponding to the kernel version.

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-3.XY-rcZ

Once testing of the upstream kernel is complete, please mark this bug's
Status as Confirmed. Please let us know your results.

Thank you for your understanding.

** Tags added: latest-bios

** Package changed: xorg (Ubuntu) => linux (Ubuntu)

** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

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

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https://bugs.launchpad.net/bugs/1341161

Title:
  after resume screen back light is off

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  after resume screen back light is off

  Actually the screen back light control is at the maximum, but the
  light is off.

  Actually the light seems to be either on or off, but no other
  variation.

  If I attempt to increase or decrease the luminosity, I get:
  min : 0%
  + : 100%
  ++ : 100%
  +++ : 100%
  ++++: 100%
  +++++: 100%
  max: 0%

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: xorg 1:7.7+1ubuntu8
  Uname: Linux 3.16.0-031600rc4-generic i686
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: i386
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: None
  CurrentDesktop: GNOME
  CurrentDmesg: Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order /var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: Permission denied
  Date: Sat Jul 12 19:18:01 2014
  DistUpgraded: Fresh install
  DistroCodename: trusty
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes
  GraphicsCard:
   Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller [8086:27a2] (rev 03) (prog-if 00 [VGA controller])
     Subsystem: Intel Corporation Device [8086:7270]
     Subsystem: Intel Corporation Device [8086:7270]
  InstallationDate: Installed on 2014-06-17 (25 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release i386 (20140417)
  MachineType: Apple Inc. MacBook2,1
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-031600rc4-generic root=UUID=e1b6b6c0-1e2f-4166-bb03-6fa39d8af4de ro quiet splash vt.handoff=7
  SourcePackage: xorg
  Symptom: display
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 06/27/07
  dmi.bios.vendor: Apple Inc.
  dmi.bios.version: MB21.88Z.00A5.B07.0706270922
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: Mac-F4208CA9
  dmi.board.vendor: Apple Inc.
  dmi.board.version: PVT
  dmi.chassis.asset.tag: Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: Apple Inc.
  dmi.chassis.version: Mac-F4208CA9
  dmi.modalias: dmi:bvnAppleInc.:bvrMB21.88Z.00A5.B07.0706270922:bd06/27/07:svnAppleInc.:pnMacBook2,1:pvr1.0:rvnAppleInc.:rnMac-F4208CA9:rvrPVT:cvnAppleInc.:ct10:cvrMac-F4208CA9:
  dmi.product.name: MacBook2,1
  dmi.product.version: 1.0
  dmi.sys.vendor: Apple Inc.
  version.compiz: compiz 1:0.9.11+14.04.20140423-0ubuntu1
  version.libdrm2: libdrm2 2.4.52-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.1
  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: Sat Jul 12 16:37:13 2014
  xserver.configfile: default
  xserver.errors:
   evdev: (unnamed): Unable to open evdev device "/dev/input/event15".
   PreInit returned 2 for "(unnamed)"
   evdev: (unnamed): Unable to open evdev device "/dev/input/event14".
   PreInit returned 2 for "(unnamed)"
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                               40031 
   vendor                                     APP
  xserver.version: 2:1.15.1-0ubuntu2

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