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[Emystein <789346@xxxxxxxxxxxxxxxxxx>]

I have a Lenovo Ideapad Y560 with an ATI Mobility Radeon HD 5730, and
had the same problem.

I have upgraded the BIOS to version 71 and the problem seems to be
solved. I have downloaded the BIOS from the Lenovo driver download page
specific to the Ideapad Y560
http://consumersupport.lenovo.com/us/en/DriversDownloads/drivers_list.aspx?CategoryID=661448

To avoid downloading a wrong BIOS, I recommend checking your laptop
model going to
http://consumersupport.lenovo.com/us/en/DriversDownloads/drivers.html
and filling the form with your laptop serial number.

My specifications:

Computer: Lenovo Ideapad Y560
Processor: Intel Core i5 M560 @ 2.67GHz
Graphics: ATI Mobility Radeon HD 5730

OS: Ubuntu 11.04
Video Drivers: ATI Propietary FLGRX Driver downloaded and installed via the Additional Drivers applet.

Also posted at: http://ubuntuforums.org/showthread.php?t=1768072

Regards,

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to gnome-power-manager in Ubuntu.
https://bugs.launchpad.net/bugs/789346

Title:
  Screen brighness randomly changes on Lenovo Y560 laptop

Status in “gnome-power-manager” package in Ubuntu:
  Confirmed

Bug description:
  My installation of Ubuntu 11.04 randomly changes screen brightness without input from the user. The time between brightness changes can be from hours to seconds.
  Changing the brightness back manually temporarily fixes this until it changes again.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: xorg 1:7.6+4ubuntu3
  ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
  Uname: Linux 2.6.38-8-generic x86_64
  NonfreeKernelModules: fglrx
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  Date: Fri May 27 14:14:12 2011
  DistUpgraded: Fresh install
  DistroCodename: natty
  DistroVariant: ubuntu
  DkmsStatus: fglrx, 8.840, 2.6.38-8-generic, x86_64: installed
  EcryptfsInUse: Yes
  GraphicsCard:
   ATI Technologies Inc Madison [Mobility Radeon HD 5000 Series] [1002:68c0] (prog-if 00 [VGA controller])
     Subsystem: Lenovo Device [17aa:3927]
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
  JockeyStatus: xorg:fglrx - ATI/AMD proprietary FGLRX graphics driver (Proprietary, Enabled, In use)
  Lsusb:
   Bus 002 Device 003: ID 064e:f207 Suyin Corp. 
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: LENOVO IdeaPad Y560
  ProcEnviron:
   LANGUAGE=en_US:en
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic root=UUID=eae539fd-b776-4fb8-8c49-f6d0d205c3f3 ro quiet splash vt.handoff=7
  Renderer: Unknown
  SourcePackage: xorg
  Symptom: display
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 07/23/2010
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 30CN62WW
  dmi.board.name: KL3
  dmi.board.vendor: Lenovo
  dmi.board.version: Rev 1.0
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: Lenovo
  dmi.chassis.version: Rev 1.0
  dmi.modalias: dmi:bvnLENOVO:bvr30CN62WW:bd07/23/2010:svnLENOVO:pnIdeaPadY560:pvrRev1.0:rvnLenovo:rnKL3:rvrRev1.0:cvnLenovo:ct10:cvrRev1.0:
  dmi.product.name: IdeaPad Y560
  dmi.product.version: Rev 1.0
  dmi.sys.vendor: LENOVO
  version.compiz: compiz 1:0.9.4+bzr20110415-0ubuntu2
  version.fglrx-installer: fglrx-installer N/A
  version.ia32-libs: ia32-libs 20090808ubuntu13
  version.libdrm2: libdrm2 2.4.23-1ubuntu6
  version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.2-0ubuntu2
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.2-0ubuntu2
  version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu7.1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu7

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