display backlight stays off after resuming from standby.

[Kristian]

With a fresh install of 9.10 on a X41s Thinkpad the display backlight stays off after resuming from standby, though the display works properly. After reboot everything is fine until next standby. Resuming from suspend to hdd does not cause this problem.
With 9.04 there was no problem with resuming from standby.

packages:
 - gnome-power-manager: 2.28.1-0ubuntu1
 - pm-utils: 1.2.5-2ubuntu7
 - kernel: 2.6.31-14-generic

ProblemType: Bug
Architecture: i386
Date: Fri Oct 30 14:16:18 2009
DistroRelease: Ubuntu 9.10
ExecutablePath: /usr/bin/yelp
Package: yelp 2.28.0-0ubuntu2
ProcEnviron:
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
SourcePackage: yelp
Uname: Linux 2.6.31-14-generic i686

[roderick (roderick)]

Same problem on my X40.

[roderick (roderick)]

Problem already discussed: https://bugs.launchpad.net/ubuntu/+source/pm-utils/+bug/417599

I fixed it using a workaround described in https://wiki.ubuntu.com/KarmicKoala/ReleaseNotes#No%20Xv%20support%20for%20Intel%2082852/855GM%20video%20chips%20with%20KMS

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[penalvch (penalvch)]

Kristian, thank you for reporting this bug to Ubuntu. Karmic reached EOL on April 30, 2011.
See this document for currently supported Ubuntu releases: https://wiki.ubuntu.com/Releases

Is this reproducible in the latest release of Ubuntu via http://cdimage.ubuntu.com/daily-live/current/ ?

If so, please execute the following via a terminal in order for the necessary debugging information to be attached:
apport-collect 464811

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]