kernel-packages team mailing list archive

Thread
Date
[Bug 925690] Re: Screen brightness adjust hotkeys don't work with an Acer 5755G laptop

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: "Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>
Date: Sun, 10 Nov 2013 21:51:49 -0000
Reply-to: Bug 925690 <925690@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
** Description changed:

  I'm using a freshly installed Saucy x64. When I press fn+left/right arrow keys the brightness of the screen doesn't change and there is no bar appearing on the top right corner indicating the change in brightness.
  This laptop has two video cards: nVidia 540M and an integrated Intel HD Graphics 3000.
  If the nVidia card is disabled in BIOS the top right bar appears but the brightness still does not change.
  ApportVersion: 2.12.5-0ubuntu2.1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  krychek    2147 F.... pulseaudio
   /dev/snd/pcmC0D0p:   krychek    2147 F...m pulseaudio
  CurrentDmesg:
+ 
+ WORKAROUND: I'm able to adjust the brightness after adding the
+ acpi_backlight=vendor kernel parameter.
  
  DistroRelease: Ubuntu 13.10
  HibernationDevice: RESUME=UUID=5dc00776-6f67-42d1-9985-15bf84510b70
  InstallationDate: Installed on 2013-10-30 (3 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  MachineType: Acer Aspire 5755G
  MarkForUpload: True
  NonfreeKernelModules: wl
  Package: linux (not installed)
  ProcFB:
   0 inteldrmfb
   1 nouveaufb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-12-generic root=UUID=d4c46cde-ec44-4da4-b4ec-a67f7b892126 ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
  RelatedPackageVersions:
   linux-restricted-modules-3.11.0-12-generic N/A
   linux-backports-modules-3.11.0-12-generic  N/A
   linux-firmware                             1.116
  Tags:  saucy
  Uname: Linux 3.11.0-12-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  dmi.bios.date: 08/09/2012
  dmi.bios.vendor: Acer
  dmi.bios.version: V1.21
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: JV51_HR
  dmi.board.vendor: Acer
  dmi.board.version: Base Board Version
  dmi.chassis.type: 10
  dmi.chassis.vendor: Acer
  dmi.chassis.version: V1.21
  dmi.modalias: dmi:bvnAcer:bvrV1.21:bd08/09/2012:svnAcer:pnAspire5755G:pvrV1.21:rvnAcer:rnJV51_HR:rvrBaseBoardVersion:cvnAcer:ct10:cvrV1.21:
  dmi.product.name: Aspire 5755G
  dmi.product.version: V1.21
  dmi.sys.vendor: Acer

** Summary changed:

- Screen brightness adjust hotkeys don't work with an Acer 5755G laptop
+ 8086:0116 [Acer Aspire 5755G] Screen brightness not adjusting via hotkeys

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

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

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/925690

Title:
  8086:0116 [Acer Aspire 5755G] Screen brightness not adjusting via
  hotkeys

Status in The Linux Kernel:
  Confirmed
Status in “linux” package in Ubuntu:
  Triaged

Bug description:
  I'm using a freshly installed Saucy x64. When I press fn+left/right arrow keys the brightness of the screen doesn't change and there is no bar appearing on the top right corner indicating the change in brightness.
  This laptop has two video cards: nVidia 540M and an integrated Intel HD Graphics 3000.
  If the nVidia card is disabled in BIOS the top right bar appears but the brightness still does not change.
  ApportVersion: 2.12.5-0ubuntu2.1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  krychek    2147 F.... pulseaudio
   /dev/snd/pcmC0D0p:   krychek    2147 F...m pulseaudio
  CurrentDmesg:

  WORKAROUND: I'm able to adjust the brightness after adding the
  acpi_backlight=vendor kernel parameter.

  DistroRelease: Ubuntu 13.10
  HibernationDevice: RESUME=UUID=5dc00776-6f67-42d1-9985-15bf84510b70
  InstallationDate: Installed on 2013-10-30 (3 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  MachineType: Acer Aspire 5755G
  MarkForUpload: True
  NonfreeKernelModules: wl
  Package: linux (not installed)
  ProcFB:
   0 inteldrmfb
   1 nouveaufb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-12-generic root=UUID=d4c46cde-ec44-4da4-b4ec-a67f7b892126 ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
  RelatedPackageVersions:
   linux-restricted-modules-3.11.0-12-generic N/A
   linux-backports-modules-3.11.0-12-generic  N/A
   linux-firmware                             1.116
  Tags:  saucy
  Uname: Linux 3.11.0-12-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  dmi.bios.date: 08/09/2012
  dmi.bios.vendor: Acer
  dmi.bios.version: V1.21
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: JV51_HR
  dmi.board.vendor: Acer
  dmi.board.version: Base Board Version
  dmi.chassis.type: 10
  dmi.chassis.vendor: Acer
  dmi.chassis.version: V1.21
  dmi.modalias: dmi:bvnAcer:bvrV1.21:bd08/09/2012:svnAcer:pnAspire5755G:pvrV1.21:rvnAcer:rnJV51_HR:rvrBaseBoardVersion:cvnAcer:ct10:cvrV1.21:
  dmi.product.name: Aspire 5755G
  dmi.product.version: V1.21
  dmi.sys.vendor: Acer

To manage notifications about this bug go to:
https://bugs.launchpad.net/linux/+bug/925690/+subscriptions