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[Bug 1320659] Re: [Lenovo ThinkPad Edge E430] "thinkpad unsupported brightness interface" message is showing while booting up

 

TARUNPRAKASHT:
>"But the brightness would be maximum even after set to low and restart the system."

This would be a different problem, covered under a separate report. This report is only focused on:
"thinkpad unsupported brightness interface" message is showing while booting up

Given how your brightness works irregardless, this would be an innocuous
problem, with no actual impact on brightness. I'll mark it Confirmed for
now.

** Description changed:

- Recently I have upgraded to my ubuntu to 12.04LTS to 14.04LTS
- 
- I am using a Thinkapd E430 Machine , Model 3254-T1Q
+ While I have no actual problem with adjusting the brightness, I've noticed a message that displays while booting up:
+ "thinkpad unsupported brightness interface" 
  
  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-24-generic 3.13.0-24.47
  ProcVersionSignature: Ubuntu 3.13.0-24.47-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:  tarunp     2026 F.... pulseaudio
+  USER        PID ACCESS COMMAND
+  /dev/snd/controlC0:  tarunp     2026 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Sun May 18 21:18:35 2014
  HibernationDevice: RESUME=UUID=7769c1de-f761-42a1-841a-41dd723f7046
  InstallationDate: Installed on 2014-04-21 (26 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  MachineType: LENOVO 3254T1Q
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=5d9a6cf6-1023-43f0-82b8-7df33d90132e ro acpi_osi=Linux quiet splash acpi_backlight=vendor 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: 10/22/2012
  dmi.bios.vendor: LENOVO
  dmi.bios.version: H0ET72WW (2.06 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 3254T1Q
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrH0ET72WW(2.06):bd10/22/2012:svnLENOVO:pn3254T1Q:pvrThinkPadEdgeE430:rvnLENOVO:rn3254T1Q:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 3254T1Q
  dmi.product.version: ThinkPad Edge E430
  dmi.sys.vendor: LENOVO

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

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https://bugs.launchpad.net/bugs/1320659

Title:
  [Lenovo ThinkPad Edge E430] "thinkpad unsupported brightness
  interface" message is showing while booting up

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  While I have no actual problem with adjusting the brightness, I've noticed a message that displays while booting up:
  "thinkpad unsupported brightness interface" 

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-24-generic 3.13.0-24.47
  ProcVersionSignature: Ubuntu 3.13.0-24.47-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:  tarunp     2026 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Sun May 18 21:18:35 2014
  HibernationDevice: RESUME=UUID=7769c1de-f761-42a1-841a-41dd723f7046
  InstallationDate: Installed on 2014-04-21 (26 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  MachineType: LENOVO 3254T1Q
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=5d9a6cf6-1023-43f0-82b8-7df33d90132e ro acpi_osi=Linux quiet splash acpi_backlight=vendor 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: 10/22/2012
  dmi.bios.vendor: LENOVO
  dmi.bios.version: H0ET72WW (2.06 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 3254T1Q
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrH0ET72WW(2.06):bd10/22/2012:svnLENOVO:pn3254T1Q:pvrThinkPadEdgeE430:rvnLENOVO:rn3254T1Q:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 3254T1Q
  dmi.product.version: ThinkPad Edge E430
  dmi.sys.vendor: LENOVO

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