Public bug reported:
Binary package hint: xfce4-power-manager
Hovering over the icon I get a "No device found" tooltip and no control
seems possible. I can, however, successfully control my backlight level
directly through sysfs like this:
echo 15 >/sys/class/backlight/acpi_video0/brightness
This is on a Thinkpad X120e machine. I had a quick look at the Ubuntu
package changelog and the source - it seems like we enable PolicyKit
support (at least there is a libpolkit-gobject-1-dev build depencency),
but xfpm-power-backlight-helper doesn't get build or installed?
It would of course be better if this machine would allow for changing
the brightness through Xrandr, but unfortunately this does not seem to
be the case (following up on this one).
ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: xfce4-power-manager-plugins 1.0.10-1
Uname: Linux 2.6.39-rc3-gohai+ x86_64
Architecture: amd64
Date: Fri Apr 15 11:43:37 2011
InstallationMedia: Xubuntu 11.04 "Natty Narwhal" - Beta amd64 (20110330)
ProcEnviron:
LANGUAGE=en_US:en
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: xfce4-power-manager
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: xfce4-power-manager (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug natty
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https://bugs.launchpad.net/bugs/761576
Title:
brightness-button: "No device found" even though sysfs control is
possible
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