Public bug reported:
If I change brightness (using laptop's Fn+keys for intensity) while in
Unity, (GUI) it is sluggish, almost freezes the OS shortly, any process,
including video stutters.
If the same action is done in non graphic enviroment, like after Alt-
Ctrl+F1 , then the intensity is changed fast and with great
responsiveness.
This is a Dell Latitude E5520
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: xorg 1:7.6+12ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-26.41-generic 3.2.19
Uname: Linux 3.2.0-26-generic i686
.tmp.unity.support.test.0:
ApportVersion: 2.0.1-0ubuntu8
Architecture: i386
CompizPlugins:
[core,bailer,detection,composite,opengl,decor,imgpng,regex,vpswitch,compiztoolbox,snap,grid,gnomecompat,mousepoll,resize,place,wall,animation,unitymtgrabhandles,move,fade,expo,ezoom,workarounds,session,scale,unityshell]
CompositorRunning: compiz
Date: Fri Jun 29 20:13:29 2012
DistUpgraded: 2012-04-24 18:28:52,675 DEBUG enabling apt cron job
DistroCodename: precise
DistroVariant: ubuntu
EcryptfsInUse: Yes
ExtraDebuggingInterest: Yes, whatever it takes to get this fixed in Ubuntu
GraphicsCard:
Intel Corporation 2nd Generation Core Processor Family Integrated Graphics
Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller])
Subsystem: Dell Device [1028:049a]
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
MachineType: Dell Inc. Latitude E5520
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-26-generic
root=UUID=70ad511c-d4f8-4231-b7ca-adf3658b302e ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to precise on 2012-04-24 (66 days ago)
dmi.bios.date: 11/30/2011
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A05
dmi.board.name: 03PH4G
dmi.board.vendor: Dell Inc.
dmi.board.version: A01
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvrA05:bd11/30/2011:svnDellInc.:pnLatitudeE5520:pvr01:rvnDellInc.:rn03PH4G:rvrA01:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E5520
dmi.product.version: 01
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.7.8-0ubuntu1
version.libdrm2: libdrm2 2.4.32-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.2-0ubuntu3.1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.2-0ubuntu3.1
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu10.2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1.2
version.xserver-xorg-video-ati: xserver-xorg-video-ati
1:6.14.99~git20111219.aacbd629-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau
1:0.0.16+git20111201+b5534a1-1build2
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug compiz-0.9 i386 precise referred-by-support ubuntu
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https://bugs.launchpad.net/bugs/1019370
Title:
Changing Brightness (on laptop) is sluggish and makes OS stutter
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