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[Bug 899585] [NEW] when display goes to a sleep mode, then wakes up. the backlight does not come back on

 

Public bug reported:

brightness slider on display config widget is erratic and does't
linearly increase and decrease rather flickers when siding  between
bright an dim

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: xorg 1:7.6+7ubuntu7
ProcVersionSignature: Ubuntu 3.0.0-13.22-generic 3.0.6
Uname: Linux 3.0.0-13-generic i686
NonfreeKernelModules: wl
.tmp.unity.support.test.0:
 
ApportVersion: 1.23-0ubuntu4
Architecture: i386
CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,grid,move,place,snap,vpswitch,mousepoll,regex,resize,gnomecompat,imgpng,animation,unitymtgrabhandles,session,wall,fade,workarounds,expo,scale,ezoom,unityshell]
CompositorRunning: compiz
Date: Sat Dec  3 15:06:31 2011
DistUpgraded: Log time: 2011-10-23 19:22:43.303681
DistroCodename: oneiric
DistroVariant: ubuntu
DkmsStatus:
 bcmwl, 5.100.82.38+bdcom, 2.6.38-11-generic, i686: installed
 bcmwl, 5.100.82.38+bdcom, 3.0.0-12-generic, i686: installed
 bcmwl, 5.100.82.38+bdcom, 3.0.0-13-generic, i686: installed
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
 Intel Corporation Mobile 945GME Express Integrated Graphics Controller [8086:27ae] (rev 03) (prog-if 00 [VGA controller])
   Subsystem: Hewlett-Packard Company Device [103c:361a]
   Subsystem: Hewlett-Packard Company Device [103c:361a]
InstallationMedia: Ubuntu-Netbook 10.04 "Lucid Lynx" - Release i386 (20100429.4)
MachineType: Hewlett-Packard HP Mini
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-13-generic root=UUID=abce34ac-224f-490f-9578-8b010d022bfd ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to oneiric on 2011-11-07 (26 days ago)
dmi.bios.date: 11/07/2008
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 361A0 Ver. F.05
dmi.board.name: 361A
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 02.0D
dmi.chassis.asset.tag: CNU902287J
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr361A0Ver.F.05:bd11/07/2008:svnHewlett-Packard:pnHPMini:pvrF.05:rvnHewlett-Packard:rn361A:rvrKBCVersion02.0D:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: HP Mini
dmi.product.version: F.05
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu6
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 2:2.15.901-1ubuntu2.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug compiz-0.9 i386 oneiric regression-update running-unity ubuntu

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https://bugs.launchpad.net/bugs/899585

Title:
  when display goes to a sleep mode, then wakes up. the backlight does
  not come back on

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References