coming back from standby the screen is dim as if running on battery

[Herco van Brug]

Binary package hint: gnome-power-manager

even if power is connected, the screen is dim coming back from standby. brightness buttons dont work and only after echo 100 > /proc/acpi/video/DGFX/LCD/brightness is the screen back to normal brightness.
i run proprietary nvidia xorg driver.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: gnome-power-manager 2.30.0-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.32-31.61-generic 2.6.32.32+drm33.14
Uname: Linux 2.6.32-31-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Mon May 23 15:52:15 2011
GnomeSessionIdleInhibited: Unknown
GnomeSessionInhibitors: Failed to acquire
GnomeSessionSuspendInhibited: Unknown
InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1)
MachineType: Hewlett-Packard HP EliteBook 8530w
PccardctlIdent:
 Socket 0:
   product info: "RICOH", "Bay8Controller", "", ""
   manfid: 0x0000, 0x0000
   function: 254 (unknown)
PccardctlStatus:
 Socket 0:
   3.3V 16-bit PC Card
   Subdevice 0 (function 0) bound to driver "pata_pcmcia"
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-31-generic root=UUID=32796759-a63d-43cb-b53f-bdd0fbba3aa6 ro quiet splash
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-power-manager
dmi.bios.date: 06/08/2010
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 68PDV Ver. F.12
dmi.board.name: 30E7
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 90.27
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr68PDVVer.F.12:bd06/08/2010:svnHewlett-Packard:pnHPEliteBook8530w:pvrF.12:rvnHewlett-Packard:rn30E7:rvrKBCVersion90.27:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: HP EliteBook 8530w
dmi.product.version: F.12
dmi.sys.vendor: Hewlett-Packard

[dino99 (9d9)]

Closing that outdated report as EOL has been reached long time ago