kernel-packages team mailing list archive

[Tony Pursell <ajp@xxxxxxxxxxxxxxxxxxxxxxx>]

Public bug reported:

This is a regression.  Up to 13.10 there was no problem changing screen
bightness on my Asus Eeepc 1015PEM.  This machine has function keys for
changing  the screen brightness up (with Fn+F6) and down (with Fn+F5).

In 14.04 using the function keys causes the indicator to appear and the
the brightness bar moves appropriately, but there is no change to screen
brightness.

Using the slider on the (new?) Brightness and Lock settings form also
has no affect on the screen brightness.  Operation of the function keys
will move the slider.  However, repeated use of the function keys causes
the slider control to disappear from the form (as is found on a machine
where control of screen brightness by function keys are not available).

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-24-generic 3.13.0-24.46
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic i686
NonfreeKernelModules: wl
ApportVersion: 2.14.1-0ubuntu3
Architecture: i386
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  tony       2031 F.... pulseaudio
CurrentDesktop: Unity
Date: Tue Apr 22 20:12:48 2014
HibernationDevice: RESUME=UUID=fcc3dc2b-0a3b-4dcf-98d9-b1f03b2c812e
InstallationDate: Installed on 2012-04-27 (724 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
MachineType: ASUSTeK Computer INC. 1015PEM
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=abf837ae-032d-4686-8803-27a1376ee9c5 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.13.0-24-generic N/A
 linux-backports-modules-3.13.0-24-generic  N/A
 linux-firmware                             1.127
SourcePackage: linux
UpgradeStatus: Upgraded to trusty on 2014-04-20 (2 days ago)
dmi.bios.date: 10/06/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0801
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: 1015PE
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: x.xx
dmi.chassis.asset.tag: 0x00000000
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK Computer INC.
dmi.chassis.version: x.x
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0801:bd10/06/2010:svnASUSTeKComputerINC.:pn1015PEM:pvrx.x:rvnASUSTeKComputerINC.:rn1015PE:rvrx.xx:cvnASUSTeKComputerINC.:ct10:cvrx.x:
dmi.product.name: 1015PEM
dmi.product.version: x.x
dmi.sys.vendor: ASUSTeK Computer INC.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 trusty

** Summary changed:

- Screen bightness cannot be adjusted
+ Screen brightness cannot be adjusted

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https://bugs.launchpad.net/bugs/1311297

Title:
  Screen brightness cannot be adjusted

Status in “linux” package in Ubuntu:
  New

Bug description:
  This is a regression.  Up to 13.10 there was no problem changing
  screen bightness on my Asus Eeepc 1015PEM.  This machine has function
  keys for changing  the screen brightness up (with Fn+F6) and down
  (with Fn+F5).

  In 14.04 using the function keys causes the indicator to appear and
  the the brightness bar moves appropriately, but there is no change to
  screen brightness.

  Using the slider on the (new?) Brightness and Lock settings form also
  has no affect on the screen brightness.  Operation of the function
  keys will move the slider.  However, repeated use of the function keys
  causes the slider control to disappear from the form (as is found on a
  machine where control of screen brightness by function keys are not
  available).

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-24-generic 3.13.0-24.46
  ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
  Uname: Linux 3.13.0-24-generic i686
  NonfreeKernelModules: wl
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: i386
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  tony       2031 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Tue Apr 22 20:12:48 2014
  HibernationDevice: RESUME=UUID=fcc3dc2b-0a3b-4dcf-98d9-b1f03b2c812e
  InstallationDate: Installed on 2012-04-27 (724 days ago)
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
  MachineType: ASUSTeK Computer INC. 1015PEM
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=abf837ae-032d-4686-8803-27a1376ee9c5 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-24-generic N/A
   linux-backports-modules-3.13.0-24-generic  N/A
   linux-firmware                             1.127
  SourcePackage: linux
  UpgradeStatus: Upgraded to trusty on 2014-04-20 (2 days ago)
  dmi.bios.date: 10/06/2010
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 0801
  dmi.board.asset.tag: To Be Filled By O.E.M.
  dmi.board.name: 1015PE
  dmi.board.vendor: ASUSTeK Computer INC.
  dmi.board.version: x.xx
  dmi.chassis.asset.tag: 0x00000000
  dmi.chassis.type: 10
  dmi.chassis.vendor: ASUSTeK Computer INC.
  dmi.chassis.version: x.x
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0801:bd10/06/2010:svnASUSTeKComputerINC.:pn1015PEM:pvrx.x:rvnASUSTeKComputerINC.:rn1015PE:rvrx.xx:cvnASUSTeKComputerINC.:ct10:cvrx.x:
  dmi.product.name: 1015PEM
  dmi.product.version: x.x
  dmi.sys.vendor: ASUSTeK Computer INC.

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