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[itsols <itsols@xxxxxxxxx>]

I'm using 14.04 on an HP ProBook 6460b.

I have the same issue.

It used to dim the laptop screen when the monitor is unplugged. Then
plugging it in again and removing it brought the controls back.

As of today, even plugging the screen multiple times is not bringing
back the controls. I really think we need this fixed.

Khalid

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https://bugs.launchpad.net/bugs/1291371

Title:
  thinkpad screen dims after unplugging external display, and won't re-
  brighten without leaving X

Status in linux package in Ubuntu:
  Triaged

Bug description:
  When I un-plug the external VGA cable from my Thinkpad X200s, the
  screen dims.  Hitting Fn-Home (the brightness-increase key) does
  nothing.  Suspending and resuming doesn't reset this, though a reboot
  will allow me to use the brightness controls again while in the POST
  and after.

  My current workaround is that every time I disconnect the monitor, I
  have to C-M-F1 to get to a virtual console, brighten the screen, and
  then M-left to get back to X.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: compiz 1:0.9.11+14.04.20140310-0ubuntu1
  ProcVersionSignature: Ubuntu 3.13.0-17.37-generic 3.13.6
  Uname: Linux 3.13.0-17-generic x86_64
  .tmp.unity.support.test.0:

  ApportVersion: 2.13.3-0ubuntu1
  Architecture: amd64
  CompizPlugins: [core,bailer,detection,composite,opengl,decor,snap,gnomecompat,grid,regex,mousepoll,compiztoolbox,resize,move,wall,animation,vpswitch,place,imgpng,workarounds,expo,fade,ezoom,session,scale,unityshell]
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  CurrentDesktop: Unity
  Date: Wed Mar 12 13:22:01 2014
  DistUpgraded: 2014-02-25 19:06:30,487 DEBUG enabling apt cron job
  DistroCodename: trusty
  DistroVariant: ubuntu
  EcryptfsInUse: Yes
  GraphicsCard:
   Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07) (prog-if 00 [VGA controller])
     Subsystem: Lenovo Device [17aa:20e4]
     Subsystem: Lenovo Device [17aa:20e4]
  MachineType: LENOVO 7465CTO
  PackageArchitecture: all
  ProcKernelCmdLine: root=UUID=5237fceb-23d0-412d-84d9-b8f8b3bf28af ro quiet splash
  SourcePackage: compiz
  UpgradeStatus: Upgraded to trusty on 2014-02-25 (14 days ago)
  dmi.bios.date: 06/25/2009
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 6DET55WW (3.05 )
  dmi.board.name: 7465CTO
  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:bvr6DET55WW(3.05):bd06/25/2009:svnLENOVO:pn7465CTO:pvrThinkPadX200s:rvnLENOVO:rn7465CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 7465CTO
  dmi.product.version: ThinkPad X200s
  dmi.sys.vendor: LENOVO
  version.compiz: compiz 1:0.9.11+14.04.20140310-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.52-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.0~rc3-0ubuntu3
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.0~rc3-0ubuntu3
  version.xserver-xorg-core: xserver-xorg-core 2:1.15.0-1ubuntu6
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
  xserver.bootTime: Wed Mar 12 09:07:01 2014
  xserver.configfile: /etc/X11/xorg.conf
  xserver.errors:

  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                               16404
   vendor                                     LEN
  xserver.version: 2:1.15.0-1ubuntu6

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