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[Bug 871809] Re: MacBook: Backlight doesn't turn on at (or after) unlock screen

 

** Description changed:

  MacBook early 2008 model, Intel® 965GM x86/MMX/SSE2
  
  Problem occurs with: Ubuntu 11.10 beta
  Does not occur with: Ubuntu 11.04, Ubuntu 10.10, Ubuntu 10.04, etc
  
  1. Choose “Lock Screen”.
  2. Wait for the backlight to turn off.
  3. Press a key or touch a pointing device.
  4. Press one of the brightness keys on the keyboard.
  5. Enter your password at the unlock screen.
  6. Press one of the brightness keys on the keyboard.
  
  What happens:
  3. The unlock screen appears, but it is almost invisible, because the backlight has not turned back on.
  4. The backlight still does not turn on.
- 4. The backlight still does not turn on.
- 5. When you choose to increase/decrease the brightness, the backlight finally turns on.
+ 5. The backlight still does not turn on.
+ 6. When you choose to increase/decrease the brightness, the backlight finally turns on.
  
  What should happen:
  3. The backlight turns on immediately.
  
  This looks similar to bug 580225, except that that bug was occurring
  with Ubuntu 10.04, whereas this bug was not.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: xserver-xorg-video-intel 2:2.15.901-1ubuntu2
  ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
  Uname: Linux 3.0.0-12-generic i686
  NonfreeKernelModules: wl
  .tmp.unity.support.test.0:
-  
+ 
  ApportVersion: 1.23-0ubuntu3
  Architecture: i386
  CompizPlugins: [core,bailer,detection,composite,opengl,decor,move,grid,place,resize,vpswitch,regex,snap,compiztoolbox,gnomecompat,animation,imgpng,mousepoll,workarounds,session,wall,fade,expo,unitymtgrabhandles,scale,ezoom,unityshell]
  CompositorRunning: compiz
  Date: Mon Oct 10 16:02:31 2011
  DistUpgraded: Log time: 2011-09-20 11:13:24.477175
  DistroCodename: oneiric
  DistroVariant: ubuntu
  DkmsStatus:
-  bcmwl, 5.100.82.38+bdcom, 2.6.38-11-generic, i686: installed
-  bcmwl, 5.100.82.38+bdcom, 3.0.0-11-generic, i686: installed
-  bcmwl, 5.100.82.38+bdcom, 3.0.0-12-generic, i686: installed
+  bcmwl, 5.100.82.38+bdcom, 2.6.38-11-generic, i686: installed
+  bcmwl, 5.100.82.38+bdcom, 3.0.0-11-generic, i686: installed
+  bcmwl, 5.100.82.38+bdcom, 3.0.0-12-generic, i686: installed
  ExtraDebuggingInterest: Yes, whatever it takes to get this fixed in Ubuntu
  GraphicsCard:
-  Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (primary) [8086:2a02] (rev 03) (prog-if 00 [VGA controller])
-    Subsystem: Apple Computer Inc. Device [106b:00a1]
-    Subsystem: Apple Computer Inc. Device [106b:00a1]
+  Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (primary) [8086:2a02] (rev 03) (prog-if 00 [VGA controller])
+    Subsystem: Apple Computer Inc. Device [106b:00a1]
+    Subsystem: Apple Computer Inc. Device [106b:00a1]
  InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
  MachineType: Apple Inc. MacBook4,1
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-12-generic root=UUID=136588bc-9f5d-4ea2-abe3-91e4b5a4f747 ro quiet splash vt.handoff=7
  SourcePackage: xserver-xorg-video-intel
  UpgradeStatus: Upgraded to oneiric on 2011-09-20 (20 days ago)
  dmi.bios.date: 02/09/08
  dmi.bios.vendor: Apple Inc.
  dmi.bios.version: MB41.88Z.00C1.B00.0802091535
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: Mac-F22788A9
  dmi.board.vendor: Apple Inc.
  dmi.board.version: PVT
  dmi.chassis.asset.tag: Asset Tag#
  dmi.chassis.type: 2
  dmi.chassis.vendor: Apple Inc.
  dmi.chassis.version: Mac-F22788A9
  dmi.modalias: dmi:bvnAppleInc.:bvrMB41.88Z.00C1.B00.0802091535:bd02/09/08:svnAppleInc.:pnMacBook4,1:pvr1.0:rvnAppleInc.:rnMac-F22788A9:rvrPVT:cvnAppleInc.:ct2:cvrMac-F22788A9:
  dmi.product.name: MacBook4,1
  dmi.product.version: 1.0
  dmi.sys.vendor: Apple Inc.
  version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu3
  version.libdrm2: libdrm2 2.4.26-1ubuntu1
  version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu3
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu3
  version.xserver-xorg: xserver-xorg 1:7.6+7ubuntu7
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20110811.g93fc084-0ubuntu1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.15.901-1ubuntu2
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1

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https://bugs.launchpad.net/bugs/871809

Title:
  MacBook: Backlight doesn't turn on at (or after) unlock screen

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References