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[Bug 1181927] Re: [Aspire V5-431]13.04: Brightness control visible but does nothing

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: "Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>
Date: Tue, 17 Sep 2013 11:07:17 -0000
Reply-to: Bug 1181927 <1181927@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

Thomas Christensen, as per http://us.acer.com/ac/en/US/content/drivers
an update is available for your BIOS (1.22). If you update to this, does
it change anything?

If not, could you please both specify what happened, and provide the output of the following terminal command:
sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date

Please note your current BIOS is already in the Bug Description, so
posting this on the old BIOS would not be helpful.

Thank you for your understanding.

** Tags added: saucy

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https://bugs.launchpad.net/bugs/1181927

Title:
  [Aspire V5-431]13.04: Brightness control visible but does nothing

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Brightness control visible but does nothing on 13.04...

  The brightness up down buttons shows the overlay brightness icon going
  up and down but it does not change the brightness (backlight).

  I have tried adjusting the kernel options acpi_osi=<x> and
  acpi_backlight=<y> (that did work with 12.10) to make it work but to
  no avail.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: linux-image-generic 3.8.0.21.37
  ProcVersionSignature: Ubuntu 3.8.0-21.32-generic 3.8.8
  Uname: Linux 3.8.0-21-generic x86_64
  ApportVersion: 2.9.2-0ubuntu8
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  thomasc    2007 F.... pulseaudio
  Date: Mon May 20 12:45:35 2013
  HibernationDevice: RESUME=UUID=2acc4a8c-a645-4f3c-bc8e-5c7a9d9df417
  InstallationDate: Installed on 2013-04-11 (38 days ago)
  InstallationMedia: Ubuntu-GNOME 13.04 "Raring Ringtail" - Alpha amd64 (20130410)
  MachineType: Acer Aspire V5-431
  MarkForUpload: True
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-21-generic root=UUID=4cfdb2ed-677a-4fd0-aa7d-5b118700bd35 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.8.0-21-generic N/A
   linux-backports-modules-3.8.0-21-generic  N/A
   linux-firmware                            1.106
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 12/12/2012
  dmi.bios.vendor: Phoenix Technologies Ltd.
  dmi.bios.version: V1.20
  dmi.board.asset.tag: No Asset Tag
  dmi.board.name: Aspire V5-431
  dmi.board.vendor: Acer
  dmi.board.version: V1.20
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 9
  dmi.chassis.vendor: Acer
  dmi.chassis.version: V1.20
  dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvrV1.20:bd12/12/2012:svnAcer:pnAspireV5-431:pvrV1.20:rvnAcer:rnAspireV5-431:rvrV1.20:cvnAcer:ct9:cvrV1.20:
  dmi.product.name: Aspire V5-431
  dmi.product.version: V1.20
  dmi.sys.vendor: Acer

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