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[Bug 1267646] Re: Asus Taichi31 2nd Backside Screen Backlight

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Axel Hübl, thank you for reporting this and helping make Ubuntu better.
Could you please confirm this issue exists with the latest development
release of Ubuntu? ISO images are available from
http://cdimage.ubuntu.com/daily-live/current/ . If the issue remains,
please just make a comment to this.

If reproducible, could you also 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-v3.13-rc7

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.

** Tags added: latest-bios-207

** Description changed:

- As reported in #1205694 and others, the backlight on my Taichi31´s 2nd
- screen (that is the touchscreen on the backside working like a tablet)
- is nearly black (but as far as I can test working).
+ The backlight on my Taichi31´s 2nd screen (that is the touchscreen on
+ the backside working like a tablet) is nearly black (but as far as I can
+ test working).
  
  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: linux-image-3.11.0-15-generic 3.11.0-15.23
  ProcVersionSignature: Ubuntu 3.11.0-15.23-generic 3.11.10
  Uname: Linux 3.11.0-15-generic x86_64
  ApportVersion: 2.12.5-0ubuntu2.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  steffi     2028 F.... pulseaudio
  Date: Fri Jan 10 00:59:35 2014
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=56c8dabe-0ddc-4b93-bc89-732bbe4fe654
  MachineType: ASUSTeK COMPUTER INC. TAICHI31
  MarkForUpload: True
  ProcEnviron:
   LANGUAGE=de_DE
   TERM=xterm
   PATH=(custom, no user)
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.11.0-15-generic root=UUID=0e7230c6-d126-4b9e-adf3-2cd0add113cd ro quiet splash vt.handoff=7
  PulseList:
   Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied
   No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-3.11.0-15-generic N/A
   linux-backports-modules-3.11.0-15-generic  N/A
   linux-firmware                             1.116
  SourcePackage: linux
  UpgradeStatus: Upgraded to saucy on 2014-01-09 (0 days ago)
  dmi.bios.date: 01/31/2013
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: TAICHI31.207
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: TAICHI31
  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.:bvrTAICHI31.207:bd01/31/2013:svnASUSTeKCOMPUTERINC.:pnTAICHI31:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnTAICHI31:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
  dmi.product.name: TAICHI31
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK COMPUTER INC.

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

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

** Summary changed:

- Asus Taichi31 2nd Backside Screen Backlight
+ 8086:0166 [Asus Taichi31] 2nd Backside Screen Backlight

-- 
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/1267646

Title:
  8086:0166 [Asus Taichi31] 2nd Backside Screen Backlight

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  The backlight on my Taichi31´s 2nd screen (that is the touchscreen on
  the backside working like a tablet) is nearly black (but as far as I
  can test working).

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: linux-image-3.11.0-15-generic 3.11.0-15.23
  ProcVersionSignature: Ubuntu 3.11.0-15.23-generic 3.11.10
  Uname: Linux 3.11.0-15-generic x86_64
  ApportVersion: 2.12.5-0ubuntu2.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  steffi     2028 F.... pulseaudio
  Date: Fri Jan 10 00:59:35 2014
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=56c8dabe-0ddc-4b93-bc89-732bbe4fe654
  MachineType: ASUSTeK COMPUTER INC. TAICHI31
  MarkForUpload: True
  ProcEnviron:
   LANGUAGE=de_DE
   TERM=xterm
   PATH=(custom, no user)
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.11.0-15-generic root=UUID=0e7230c6-d126-4b9e-adf3-2cd0add113cd ro quiet splash vt.handoff=7
  PulseList:
   Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied
   No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-3.11.0-15-generic N/A
   linux-backports-modules-3.11.0-15-generic  N/A
   linux-firmware                             1.116
  SourcePackage: linux
  UpgradeStatus: Upgraded to saucy on 2014-01-09 (0 days ago)
  dmi.bios.date: 01/31/2013
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: TAICHI31.207
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: TAICHI31
  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.:bvrTAICHI31.207:bd01/31/2013:svnASUSTeKCOMPUTERINC.:pnTAICHI31:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnTAICHI31:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
  dmi.product.name: TAICHI31
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK COMPUTER INC.

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