kernel-packages team mailing list archive

[Scott Pattinson <spattinson@xxxxxxxxx>]

Public bug reported:

system settings lock/brightness slider is absent.
processed all the steps in https://wiki.ubuntu.com/Kernel/Debugging/Backlight and none of the workarounds work.
/sys/class/backlight/intel_backlight/brightness echoing values to this DOES change the brightness though
results.log says that _BCL is broken though

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: linux-image-3.16.0-23-generic 3.16.0-23.30
ProcVersionSignature: Ubuntu 3.16.0-23.30-generic 3.16.4
Uname: Linux 3.16.0-23-generic x86_64
ApportVersion: 2.14.7-0ubuntu8
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC1:  scott      2245 F.... pulseaudio
 /dev/snd/controlC0:  scott      2245 F.... pulseaudio
CurrentDesktop: Unity
Date: Wed Oct 22 21:02:02 2014
HibernationDevice: RESUME=UUID=98c67a5a-4356-4e87-ac33-f59f8d45895a
InstallationDate: Installed on 2014-10-21 (1 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Alpha amd64 (20140923)
MachineType: ASUSTeK COMPUTER INC. N550JK
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-23-generic.efi.signed root=UUID=74c1b47c-6afc-49a0-8c0f-6de00ad61bb8 ro quiet splash video.use_bios_initial_backlight=0 vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.16.0-23-generic N/A
 linux-backports-modules-3.16.0-23-generic  N/A
 linux-firmware                             1.136
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/11/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: N550JK.207
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: N550JK
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrN550JK.207:bd08/11/2014:svnASUSTeKCOMPUTERINC.:pnN550JK:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnN550JK:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.name: N550JK
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.

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


** Tags: amd64 apport-bug utopic

** Attachment added: "all files collected from following setps on kernel/debugging backlight page"
   https://bugs.launchpad.net/bugs/1384435/+attachment/4241963/+files/evidence.tar

-- 
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/1384435

Title:
  backlight not adjusting either from fn keys or from system settings

Status in “linux” package in Ubuntu:
  New

Bug description:
  system settings lock/brightness slider is absent.
  processed all the steps in https://wiki.ubuntu.com/Kernel/Debugging/Backlight and none of the workarounds work.
  /sys/class/backlight/intel_backlight/brightness echoing values to this DOES change the brightness though
  results.log says that _BCL is broken though

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: linux-image-3.16.0-23-generic 3.16.0-23.30
  ProcVersionSignature: Ubuntu 3.16.0-23.30-generic 3.16.4
  Uname: Linux 3.16.0-23-generic x86_64
  ApportVersion: 2.14.7-0ubuntu8
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  scott      2245 F.... pulseaudio
   /dev/snd/controlC0:  scott      2245 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Wed Oct 22 21:02:02 2014
  HibernationDevice: RESUME=UUID=98c67a5a-4356-4e87-ac33-f59f8d45895a
  InstallationDate: Installed on 2014-10-21 (1 days ago)
  InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Alpha amd64 (20140923)
  MachineType: ASUSTeK COMPUTER INC. N550JK
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-23-generic.efi.signed root=UUID=74c1b47c-6afc-49a0-8c0f-6de00ad61bb8 ro quiet splash video.use_bios_initial_backlight=0 vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-23-generic N/A
   linux-backports-modules-3.16.0-23-generic  N/A
   linux-firmware                             1.136
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/11/2014
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: N550JK.207
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: N550JK
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: ASUSTeK COMPUTER INC.
  dmi.chassis.version: 1.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrN550JK.207:bd08/11/2014:svnASUSTeKCOMPUTERINC.:pnN550JK:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnN550JK:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
  dmi.product.name: N550JK
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK COMPUTER INC.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1384435/+subscriptions