[Solved] power management during kde startup not loading

Question

Hi,
after solving one problem here comes another. From on side it's onying, but on the other side I lesrn a lot about my system.
Well this time after the last kde update, I get the following message:
KDE Power Management System could not be initialized. The backend reported the following error:
No valid Power Management backend plugins are available. A new installation might solve this problem.
Please check your system configuration.
So I went to:System Settings>>Power Management and the pane on the right is greyed out and there is a message:
Power Management configuration module could not be loaded. The Power Management Service appears not to be running.
This can be solved by starting or scheduling it inside "Startup and Shutdown"
System Settings>>Startup and Shutdown>>Service Manager, shows that Power management is running.
If I try to start upower manually I get the following message:
/usr/lib/upower/upowerd
(upowerd:30849): UPower-WARNING **: Failed to acquire org.freedesktop.UPower: Connection ":1.77"
is not allowed to own the service "org.freedesktop.UPower" due to security policies in the configuration file
(upowerd:30849): UPower-WARNING **: Could not acquire name; bailing out
I found this post: http://forums.opensuse.org/showthread.p … KDE-4-11-1
where it states tha this was a bug in some previous kde releases.
Well apparently it happened again here.
I read somewhere that it could be because the policykit rules weren't update. I tried to understand policykit conf files but for no avail. I'm twice lefthanded on that matter.
Any takers?
PS.: Checking with journalctl -r I found that upowerd was masked, so I did;
#systemctl unmask upower.service
than I enabled it;
#systemctl enable upower.service
and if you want to start it right away than;
#systemctl start upower.service
Well that's it.
Last edited by camarao (2014-03-12 14:48:20)

Answer 1

Thanks for your answers!
arojas wrote:is the upower daemon running?
Not sure about that. I installed upower but I don't know how to configure it or if any configuration is needed. If I understand official documentation correctly, upower daemon should be started automatically if some application needs it.
cfr wrote:Are you sure that you installed everything necessary for that to work? Which parts of KDE did you install, for example?
I have full KDE installation (# pacman -S kde-meta) so problem should be in my Arch installation, no in KDE itself. I have only installed Arch, Xorg, proprietary Nvidia drivers and KDE so far, so there is only small chance I break or messed up something - it's more likely something I didn't install yet or didn't know how to configure.
Last edited by HungryMonster (2012-07-17 07:52:40)