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[Bug 1088992] Re: Sony backlight brightness controls not working in 12.10


Dave Peck, as per
http://www.sony.co.uk/support/en/product/SVE1712C5E/updates an update is
available for your BIOS (R0170D6). If you update to this, does it change

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

Thank you for your understanding.

** Tags added: bios-outdated-r0170d6 needs-upstream-testing regression-

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

** Summary changed:

- Sony backlight brightness controls not working in 12.10
+ [Sony VAIO SVE1712C5E] Backlight brightness controls not working in 12.10

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  [Sony VAIO SVE1712C5E] Backlight brightness controls not working in

Status in “linux” package in Ubuntu:

Bug description:
  I have recently updated from 12.04 LTS to 12.10 to enable better
  support for UEFI booting on my machine.

  Now that I have updated to 12.10 the brightness controls no longer
  work. They were working fine in Version 12.04 LTS. I have been
  debugging this problem with a very helpful person (Toz) on the Ubuntu
  Forums and it would be worth taking a look at this thread to see
  progress to date http://ubuntuforums.org/showthread.php?t=2092897

  As suggested I have created a bug report with "ubuntu-bug linux" in

  I am happy to provide any additional information they may help resolve
  this problem.

  Regards,  Dave.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: linux-image-3.5.0-19-generic 3.5.0-19.30
  ProcVersionSignature: Ubuntu 3.5.0-19.30-generic 3.5.7
  Uname: Linux 3.5.0-19-generic x86_64
  ApportVersion: 2.6.1-0ubuntu6
  Architecture: amd64
   /dev/snd/controlC1:  mrpeck     2089 F.... pulseaudio
   /dev/snd/controlC0:  mrpeck     2089 F.... pulseaudio
  Date: Tue Dec 11 16:18:06 2012
  HibernationDevice: RESUME=UUID=2f6c7b43-284c-42d6-954f-42eb906d03c2
  InstallationDate: Installed on 2012-12-07 (4 days ago)
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
  MachineType: Sony Corporation SVE1712C5E
  MarkForUpload: True
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-19-generic.efi.signed root=UUID=0f0e5ff5-ec6b-4fdf-89da-2852db86b2cb ro quiet splash vt.handoff=7
   linux-restricted-modules-3.5.0-19-generic N/A
   linux-backports-modules-3.5.0-19-generic  N/A
   linux-firmware                            1.95
  SourcePackage: linux
  StagingDrivers: rts_pstor
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/23/2012
  dmi.bios.vendor: Insyde Corp.
  dmi.bios.version: R0140D6
  dmi.board.asset.tag: N/A
  dmi.board.name: VAIO
  dmi.board.vendor: Sony Corporation
  dmi.board.version: N/A
  dmi.chassis.asset.tag: N/A
  dmi.chassis.type: 10
  dmi.chassis.vendor: Sony Corporation
  dmi.chassis.version: N/A
  dmi.modalias: dmi:bvnInsydeCorp.:bvrR0140D6:bd08/23/2012:svnSonyCorporation:pnSVE1712C5E:pvrC904SF1U:rvnSonyCorporation:rnVAIO:rvrN/A:cvnSonyCorporation:ct10:cvrN/A:
  dmi.product.name: SVE1712C5E
  dmi.product.version: C904SF1U
  dmi.sys.vendor: Sony Corporation

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