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[mykrob <myk.robinson@xxxxxxxxx>]

Public bug reported:

Binary package hint: xorg

This is on an Asus K50IJ laptop with Intel GMA X4500HD graphics. In the
previous release (Karmic), the LCD brightness adjustment both on the
keyboard, as well as the auto-dim for power save, worked flawlessly. As
of today (April 7th, 2010) with all updates run, this still does not
function for me in Lucid. The hotkey press does invoke the onscreen
display that shows that an adjustment should be taking place, although
it has  a definite delay for subsequent presses. The actual screen
brightness, however, does not change.

Needless to say, this also effects battery life. In Karmic, I was able
to run about 3 hours on battery, now I can get right at about 2 hours,
presumably due to the extra battery consumption necessary to run the
screen without being able to reduce brightness.

The output of lshw is attached, hope this helps.

Thanks

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: xorg 1:7.5+3ubuntu1
ProcVersionSignature: Ubuntu 2.6.32-19.28-generic 2.6.32.10+drm33.1
Uname: Linux 2.6.32-19-generic i686
Architecture: i386
Date: Wed Apr  7 15:59:10 2010
DkmsStatus: Error: [Errno 2] No such file or directory
GdmLog1:
 
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta i386 (20100318)
MachineType: ASUSTeK Computer Inc. K50IJ
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-19-generic root=UUID=c2815e8b-bd9b-45fd-86bd-f2454ecf3751 ro quiet splash
ProcEnviron:
 LANG=en_US.utf8
 SHELL=/bin/bash
SourcePackage: xorg
Symptom: display
dmi.bios.date: 12/04/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 217
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: K50IJ
dmi.board.vendor: ASUSTeK Computer Inc.
dmi.board.version: 1.0
dmi.chassis.asset.tag: ATN12345678901234567
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK Computer Inc.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr217:bd12/04/2009:svnASUSTeKComputerInc.:pnK50IJ:pvr1.0:rvnASUSTeKComputerInc.:rnK50IJ:rvr1.0:cvnASUSTeKComputerInc.:ct10:cvr1.0:
dmi.product.name: K50IJ
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK Computer Inc.
glxinfo: Error: [Errno 2] No such file or directory
system:
 distro:             Ubuntu
 codename:           lucid
 architecture:       i686
 kernel:             2.6.32-19-generic

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


** Tags: apport-bug i386 lucid

-- 
Intel GMA X4500HD - LCD Brightness Control no longer works
https://bugs.launchpad.net/bugs/557635
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