DPMS Turns Itself On Workaround Fix

[Guest]

Hi,

I installed kubuntu 12.04.1, earlier today and run into this bug and stumbled across this thread looking for a solution. I believe I have figured out a workaround for now (for those who don't want to compile KDE from source and don't mind disabling power management completely), so I thought I'd post it here, since I haven't seen it anywhere else.

THE BUG: performing some actions such as (un)installing a package in muon cause dpms to be enabled overriding kde power management settings (others have reported using dragon or vlc or copying a file with dolphin can trigger the problem, I believe). xset -q reveals dpms has been switched on with apparently random setting for Standby, Suspend and Off. xset -dpms will temporarily fix this, until the bug is activated again (e.g. through muon).

THE WORKAROUND:

1) Go to System settings > Startup and Shutdown > Service Manager and disable Power Managment

2) Create the following script (similar to one proposed earlier in the thread):

#!/bin/bash

xset dpms 0 0 0
xset -dpms

name it "nodpms" (say) and chmod +x it and move it to ~/.kde/Autostart. Then logout and in again, and the fix should be in place. Installing a package in muon no longer enables dpms. Note: You need this script otherwise dpms defaults to on at login, but I guess disabling dpms in xorg.conf instead of the above script will probably have the same effect, but I've not tried it.

Hope this helps someone else.