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[Bug 847001] Re: Adjusting display brightness is very slow on Dell E5410 with Natty.

 

Hi Mathieu,

Thanks for the reply.

I just guess there is a general issue with Dell systems.

There might be an issue with the kernel, or the gnome-power-manager.
The issue never happened on different OSes with lower kernel revisions like Fedora 13, 14 and Centos AND RHEL 5 and 6.
Also, Solaris 10 & 11 Express and OpenSolaris act very good. 
They seem to overpassed this issue. 

 Best regards.

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You received this bug notification because you are a member of Desktop
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https://bugs.launchpad.net/bugs/847001

Title:
  Adjusting display brightness is very slow on Dell E5410 with Natty.

Status in “gnome-power-manager” package in Ubuntu:
  New

Bug description:
  Changing the brightness via FN key combination or via the brightness applet is very slow.
  the CPUs don't seem to go to 100%, but the adjustment process seems relatively slow.
  The mouse cursor is also sluggish.
  Reinstalled the OS twice, but not because of this issue and the problem seems to persist.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: gnome-power-manager 2.32.0-2ubuntu2.1
  ProcVersionSignature: Ubuntu 2.6.38-11.48-generic 2.6.38.8
  Uname: Linux 2.6.38-11-generic x86_64
  Architecture: amd64
  Date: Sun Sep 11 15:29:02 2011
  GnomeSessionIdleInhibited: No
  GnomeSessionInhibitors: None
  GnomeSessionSuspendInhibited: No
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427)
  MachineType: Dell Inc. Latitude E5410
  ProcEnviron:
   LANGUAGE=en_US:en
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-11-generic root=UUID=0dfaacc9-c19d-425b-963d-dabb87ae18bc ro quiet splash vt.handoff=7
  SourcePackage: gnome-power-manager
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 01/28/2011
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A09
  dmi.board.name: 05C67D
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA09:bd01/28/2011:svnDellInc.:pnLatitudeE5410:pvr0001:rvnDellInc.:rn05C67D:rvrA00:cvnDellInc.:ct9:cvr:
  dmi.product.name: Latitude E5410
  dmi.product.version: 0001
  dmi.sys.vendor: Dell Inc.

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