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[Bug 1353429] [NEW] Lenovo X1 Carbon 2nd Gen internal display dims when disconnecting external display

 

Public bug reported:

I was asked to file this report by penalvch in
https://bugs.launchpad.net/ubuntu/trusty/+source/linux/+bug/1313830 to
track my hardware

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-32-generic 3.13.0-32.57
ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
Uname: Linux 3.13.0-32-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC1:  danny      2870 F.... pulseaudio
 /dev/snd/controlC0:  danny      2870 F.... pulseaudio
CurrentDesktop: Unity
Date: Wed Aug  6 12:23:08 2014
HibernationDevice: RESUME=UUID=07e8a9ba-65a6-4341-b00f-44c6ab3c856d
InstallationDate: Installed on 2014-06-12 (54 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
MachineType: LENOVO 20A7CTO1WW
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-32-generic.efi.signed root=UUID=f9961064-98b2-413f-a6f7-11932f51eac7 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.13.0-32-generic N/A
 linux-backports-modules-3.13.0-32-generic  N/A
 linux-firmware                             1.127.5
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/08/2014
dmi.bios.vendor: LENOVO
dmi.bios.version: GRET37WW (1.14 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20A7CTO1WW
dmi.board.vendor: LENOVO
dmi.board.version: SDK0E50512 Std
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvrGRET37WW(1.14):bd05/08/2014:svnLENOVO:pn20A7CTO1WW:pvrThinkPadX1Carbon2nd:rvnLENOVO:rn20A7CTO1WW:rvrSDK0E50512Std:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 20A7CTO1WW
dmi.product.version: ThinkPad X1 Carbon 2nd
dmi.sys.vendor: LENOVO

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


** Tags: amd64 apport-bug trusty

-- 
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Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1353429

Title:
  Lenovo X1 Carbon 2nd Gen internal display dims when disconnecting
  external display

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  I was asked to file this report by penalvch in
  https://bugs.launchpad.net/ubuntu/trusty/+source/linux/+bug/1313830 to
  track my hardware

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-32-generic 3.13.0-32.57
  ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
  Uname: Linux 3.13.0-32-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  danny      2870 F.... pulseaudio
   /dev/snd/controlC0:  danny      2870 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Wed Aug  6 12:23:08 2014
  HibernationDevice: RESUME=UUID=07e8a9ba-65a6-4341-b00f-44c6ab3c856d
  InstallationDate: Installed on 2014-06-12 (54 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  MachineType: LENOVO 20A7CTO1WW
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-32-generic.efi.signed root=UUID=f9961064-98b2-413f-a6f7-11932f51eac7 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-32-generic N/A
   linux-backports-modules-3.13.0-32-generic  N/A
   linux-firmware                             1.127.5
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 05/08/2014
  dmi.bios.vendor: LENOVO
  dmi.bios.version: GRET37WW (1.14 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20A7CTO1WW
  dmi.board.vendor: LENOVO
  dmi.board.version: SDK0E50512 Std
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrGRET37WW(1.14):bd05/08/2014:svnLENOVO:pn20A7CTO1WW:pvrThinkPadX1Carbon2nd:rvnLENOVO:rn20A7CTO1WW:rvrSDK0E50512Std:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 20A7CTO1WW
  dmi.product.version: ThinkPad X1 Carbon 2nd
  dmi.sys.vendor: LENOVO

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