[Mageia-dev] Desktop monitor powering down

Wed Aug 8 15:17:34 CEST 2012

On 08/08/2012 07:42 AM, Colin Guthrie wrote:
+> Generally speaking these settings are done in the display environment
+> GUIs (i.e. Gnome and KDE) thus avoiding having to call xset directly by
+> the user or in scripts etc. This is just a command line interface to
+> things the DE's should wrap already.
+>
+> So I'd go looking for those bits breaking and/or something in your user
+> account messing up. i.e. try it with a fresh boot and logging into a
+> fresh user account and see if the problem still occurs. That might help
+> narrow down where the real problem lies.
+>
+>
+This is getting muddy.  I've done a lot of cauldron updating since my 
+last logout/reboot, and when I tried a fresh boot GDM hung repeatedly, 
+and I had to switch to KDM.
+
+The problem doesn't occur with a fresh user, but it no longer occurs on 
+my userid either.  Either it's a function of the DM, or else the "xset 
+-dpms" I did previously is sticky:
+
+[root at ftgme2 ftg]# xset q
+Keyboard Control:
+...
+DPMS (Energy Star):
+   Standby: 600    Suspend: 600    Off: 600
+   DPMS is Disabled
+
+But knowing that dpms is involved got some google results, and I think 
+the problem is https://bugs.kde.org/show_bug.cgi?id=295814
+
+The similarity between my case and the reported ones is that I had set 
+all Power Management off, so that the screen would never dim or 
+disable.  I had done this because I have some WINE stuff run overnight 
+by cron, and when KDE blanks or disables the screen, graphical apps 
+won't start.
+
+According to the report, a disabled PM enables dpms with a random set of 
+numbers.  I just happened to get 30 seconds.  One poor sod had a 
+1-second timeout.
+