Please reply if this is still an issue on a supported release.
** Changed in: pm-utils (Ubuntu)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/587180
Title:
backlight doesn't turn on when resuming from suspend
Status in “pm-utils” package in Ubuntu:
Invalid
Bug description:
Binary package hint: pm-utils
Hi guys,
My Dell Inspiron 8500 doesn't resume properly when suspending. The keyboard
responds, and it looks as though everything system-wise is intact, except the
backlight doesn't turn on.
The only way to get the backlight on again is to do a reboot.
Backlight control works fine when the screensaver/power management
triggers it to turn off/on again, but resuming has never worked.
This laptop used to have an NVidia card (which has since stopped
working altogether), and I'm pretty sure that resuming worked OK on
the old video card. It now has an ATI Radeon card.
I have tried setting radeon.modeset=0 and/or modeset=0 on boot options
but that locks the machine after a few minutes (as reported here
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/574848).
Also tried pm-suspend with various options, as well as playing with
the quirkdb file, all to no avail.
ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: pm-utils 1.3.0-1ubuntu2 [modified:
usr/lib/pm-utils/video-quirks/20-video-quirk-pm-dell.quirkdb]
ProcVersionSignature: Ubuntu 2.6.32-22.33-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-22-generic i686
Architecture: i386
Date: Sat May 29 19:07:40 2010
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
PackageArchitecture: all
ProcEnviron:
LANG=en_AU.utf8
SHELL=/bin/bash
SourcePackage: pm-utils
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