Display screen is turned off after timeout even when blanking disabled

After a recent update which among other things upgraded gnome to 3.10 my display blanking policy no longer behaves according to a configuration.
Currently it is being turned off (monitor says "no DVI signal" and switches off) after each 10 mins if idle time.
In Gnome's Power Settings I have 'Blank Screen' set to Never.
It used to work perfectly earlier, no blanking, but now it blanks not only when I'm idle, but even when watching some movie in VLC.
I am not sure if this has to do with Gnome update or some other system component is causing this.
Using nvidia driver.
Any hint or link to the topic with the workaround would be greatly appreciated.
I tried google and local forum search and found nothing on the topic
Last edited by dimsuz (2013-10-10 09:49:36)

I just noticed myself this annoying issue and I do not use Gnome nor GDM.
The thing is after checking the xset settings with
xset q
I noticed that the DPMS settings for Standby, Suspend and Off were back to their default values (60/60/600) instead of the 0/0/0 as I am using
xset s off &
in my openbox autostart file to avoid the screen blanking.
The way I fixed it was to simply run
xset -dpms
being the DPMS featured as disabled when queried.
Afterwards I checked that the screen did not blank again and 1) logged out and 2) restarted checking both times that the DPMS were the ones expected (0/0/0).
Thus, so far, I have no issues with the screen blanking in a non Gnome environment (Openbox) anymore.
Last edited by root (2013-10-18 22:46:26)

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