kernel-packages team mailing list archive

["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

Alan Jenkins, as per http://us.acer.com/ac/en/US/content/drivers an
update is available for your BIOS (2.15). 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

Thank you for your understanding.

** Tags removed: kernel-bug-exists-upstream
** Tags added: bios-outdated-2.15 kernel-bug-exists-upstream-v3.9 needs-upstream-testing

** Summary changed:

- Acer V5-171 laptop: backlight cannot be adjusted unless passing acpi_backlight=vendor
+ [Acer Aspire V5-171] Backlight cannot be adjusted unless passing acpi_backlight=vendor

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

-- 
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https://bugs.launchpad.net/bugs/1173725

Title:
  [Acer Aspire V5-171] Backlight cannot be adjusted unless passing
  acpi_backlight=vendor

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  The boot parameter is suggested as a fix for this model by
  http://www.linlap.com/acer_aspire_v5-171

  (so if it would help, I would suggest classing this bug as
  "confirmed").

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: linux-image-3.8.0-19-generic 3.8.0-19.29 [modified: boot/vmlinuz-3.8.0-19-generic]
  ProcVersionSignature: Ubuntu 3.8.0-19.29-generic 3.8.8
  Uname: Linux 3.8.0-19-generic x86_64
  ApportVersion: 2.9.2-0ubuntu8
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  alan       1919 F.... pulseaudio
  Date: Sat Apr 27 19:59:23 2013
  InstallationDate: Installed on 2013-04-27 (0 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
  MachineType: Acer V5-171
  MarkForUpload: True
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-19-generic.efi.signed root=UUID=ad03cbd3-39e0-4f7e-b0ab-e1ef3abaa88e ro acpi_backlight=vendor quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.8.0-19-generic N/A
   linux-backports-modules-3.8.0-19-generic  N/A
   linux-firmware                            1.106
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 09/14/2012
  dmi.bios.vendor: Acer
  dmi.bios.version: V2.04
  dmi.board.asset.tag: Type2 - Board Asset Tag
  dmi.board.name: Mimic
  dmi.board.vendor: Acer
  dmi.board.version: Type2 - Board Version
  dmi.chassis.type: 10
  dmi.chassis.vendor: Acer
  dmi.chassis.version: V2.04
  dmi.modalias: dmi:bvnAcer:bvrV2.04:bd09/14/2012:svnAcer:pnV5-171:pvrV2.04:rvnAcer:rnMimic:rvrType2-BoardVersion:cvnAcer:ct10:cvrV2.04:
  dmi.product.name: V5-171
  dmi.product.version: V2.04
  dmi.sys.vendor: Acer

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