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[Bug 1314263] Re: [Aspire 5830TG] Backlight control does not work, but there are entries in /sys/class/backlight.

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: "Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>
Date: Wed, 30 Apr 2014 11:02:35 -0000
Reply-to: Bug 1314263 <1314263@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Krzysztof Dłużyński, could you please test the latest upstream kernel available (not the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER

where VERSION-NUMBER is the version number of the kernel you tested. For example:
kernel-fixed-upstream-3.15-rc3

This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag:
needs-upstream-testing

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER

As well, please remove the tag:
needs-upstream-testing

Once testing of the upstream kernel is complete, please mark this bug's
Status as Confirmed. Please let us know your results. Thank you for your
understanding.

** Description changed:

  I was trying to attach all the debugging information you have requested
  in https://wiki.ubuntu.com/Kernel/Debugging/Backlight but of course I
  can attach only one file. "You had only one job !" god damn it ! So here
  you have it packed - just as you dont like.
+ 
+ WORKAROUND: video.use_bios_initial_backlight=0
  
  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-24-generic 3.13.0-24.46 [modified: boot/vmlinuz-3.13.0-24-generic]
  ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
-  USER        PID ACCESS COMMAND
-  /dev/snd/controlC0:  krzysiek   1727 F.... pulseaudio
+  USER        PID ACCESS COMMAND
+  /dev/snd/controlC0:  krzysiek   1727 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Tue Apr 29 17:53:20 2014
  HibernationDevice: RESUME=UUID=98bb6fc0-55d5-4f87-8ee0-b29de4104441
  InstallationDate: Installed on 2014-04-28 (0 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  MachineType: Acer Aspire 5830TG
  ProcFB:
-  0 inteldrmfb
-  1 nouveaufb
+  0 inteldrmfb
+  1 nouveaufb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=aa11c6e0-57f7-4803-a66d-18ffc0a43790 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
+  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: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/14/2012
  dmi.bios.vendor: Acer
  dmi.bios.version: V1.12
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: JM50_HR
  dmi.board.vendor: Acer
  dmi.board.version: Base Board Version
  dmi.chassis.type: 10
  dmi.chassis.vendor: Acer
  dmi.chassis.version: V1.12
  dmi.modalias: dmi:bvnAcer:bvrV1.12:bd08/14/2012:svnAcer:pnAspire5830TG:pvrV1.12:rvnAcer:rnJM50_HR:rvrBaseBoardVersion:cvnAcer:ct10:cvrV1.12:
  dmi.product.name: Aspire 5830TG
  dmi.product.version: V1.12
  dmi.sys.vendor: Acer

** Description changed:

  I was trying to attach all the debugging information you have requested
  in https://wiki.ubuntu.com/Kernel/Debugging/Backlight but of course I
  can attach only one file. "You had only one job !" god damn it ! So here
  you have it packed - just as you dont like.
  
- WORKAROUND: video.use_bios_initial_backlight=0
+ WORKAROUND: video.use_bios_initial_backlight=1
  
  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-24-generic 3.13.0-24.46 [modified: boot/vmlinuz-3.13.0-24-generic]
  ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  krzysiek   1727 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Tue Apr 29 17:53:20 2014
  HibernationDevice: RESUME=UUID=98bb6fc0-55d5-4f87-8ee0-b29de4104441
  InstallationDate: Installed on 2014-04-28 (0 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  MachineType: Acer Aspire 5830TG
  ProcFB:
   0 inteldrmfb
   1 nouveaufb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=aa11c6e0-57f7-4803-a66d-18ffc0a43790 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: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/14/2012
  dmi.bios.vendor: Acer
  dmi.bios.version: V1.12
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: JM50_HR
  dmi.board.vendor: Acer
  dmi.board.version: Base Board Version
  dmi.chassis.type: 10
  dmi.chassis.vendor: Acer
  dmi.chassis.version: V1.12
  dmi.modalias: dmi:bvnAcer:bvrV1.12:bd08/14/2012:svnAcer:pnAspire5830TG:pvrV1.12:rvnAcer:rnJM50_HR:rvrBaseBoardVersion:cvnAcer:ct10:cvrV1.12:
  dmi.product.name: Aspire 5830TG
  dmi.product.version: V1.12
  dmi.sys.vendor: Acer

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

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

-- 
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/1314263

Title:
  [Aspire 5830TG] Backlight control does not work, but there are entries
  in /sys/class/backlight.

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  I was trying to attach all the debugging information you have
  requested in https://wiki.ubuntu.com/Kernel/Debugging/Backlight but of
  course I can attach only one file. "You had only one job !" god damn
  it ! So here you have it packed - just as you dont like.

  WORKAROUND: video.use_bios_initial_backlight=1

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-24-generic 3.13.0-24.46 [modified: boot/vmlinuz-3.13.0-24-generic]
  ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  krzysiek   1727 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Tue Apr 29 17:53:20 2014
  HibernationDevice: RESUME=UUID=98bb6fc0-55d5-4f87-8ee0-b29de4104441
  InstallationDate: Installed on 2014-04-28 (0 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  MachineType: Acer Aspire 5830TG
  ProcFB:
   0 inteldrmfb
   1 nouveaufb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=aa11c6e0-57f7-4803-a66d-18ffc0a43790 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: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/14/2012
  dmi.bios.vendor: Acer
  dmi.bios.version: V1.12
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: JM50_HR
  dmi.board.vendor: Acer
  dmi.board.version: Base Board Version
  dmi.chassis.type: 10
  dmi.chassis.vendor: Acer
  dmi.chassis.version: V1.12
  dmi.modalias: dmi:bvnAcer:bvrV1.12:bd08/14/2012:svnAcer:pnAspire5830TG:pvrV1.12:rvnAcer:rnJM50_HR:rvrBaseBoardVersion:cvnAcer:ct10:cvrV1.12:
  dmi.product.name: Aspire 5830TG
  dmi.product.version: V1.12
  dmi.sys.vendor: Acer

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References

[Bug 1314263] [NEW] Backlight control does not work, but there are entries in /sys/class/backlight.
From: Krzysztof Dłużyński, 2014-04-29