Public bug reported: I've a Kubuntu Toshiba A110 with a 1280x800 display. I did like to set poweroff time of my display at 5 minutes. After applying, it functioned properly.
Two problems were caused by this bug: 1. Next morning the X system didn't start. /etc/X11/xorg.conf was changed in such a way that my settings were incorrect. I assume that the settings were not completly accurately copied and consequently wrongly written back. I only wanted to change the poweroff time... I replaced xorg.conf and started again. 2. Now the poweroff time was 5 hours instead of 5 minutes. I traced the file displayconfigrc (in .kde/share/config) with the following contents: [General] targetgamma=2.0 [Screen0] dpmsEnabled=on dpmsSeconds=300 height=800 reflectX=0 reflectY=0 refresh=60 rotate=0 width=1280 Obviously the dpmsSeconds are treated as minutes. I changed the dpmsSeconds to a value of 5 and indeed the display powered off after 5 minutes. Only exception is after starting a session, than it takes about 5 seconds to power of the display. So I assume that on several places minutes and seconds are mixed up. Further I think that only setting poweroff behaviour should not change the xorg.conf file. I'm installing two laptops, both had same problem. Thanks for solving this. Also reported at kde: Product: systemsettings Version: unspecified Platform: unspecified OS/Version: Linux Status: UNCONFIRMED Severity: normal Priority: NOR Component: general AssignedTo: ben meyerhome net Version: 0.2 (using KDE 3.5.5, Kubuntu (edgy) 4:3.5.5-0ubuntu3) Compiler: Target: i486-linux-gnu OS: Linux (i686) release 2.6.17-10-generic ** Affects: Ubuntu Importance: Undecided Status: Unconfirmed -- Display powermanagement confuses seconds with minutes and distroys displaysettings https://launchpad.net/bugs/77558 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs