Hi everyone,
the screen of my Acer Aspire V5-571G (Ubuntu Mate 16.04) goes after about 10 - 15 min after inactivity
into energy saving mode and turns the screen black, even if i a video is running.
I already turned off the screensaver and installed caffeine but without any
positive results.
I am grateful for any help an thank you in advance.
Hi wolfman,
thank you very much.
i’m testing the different solutions that are explained in this thread,
and i’m sure one of them will be the right one for me.
Of course i will let you know which one solved my problem.
Thanks again and have a nice evening, Patrick
Hi Wolfman,
my first try was to change the value of “org.mate.screensaver cycle-delay” in dconf to 240
like suggested in your quoted thread.
After two tests of playing a video ín full screen mode, the screen did not blank any more.
I guess the same result is to expectable, when you set the value to 0.
Update: the solution i described above does not work for all web video players.
So i tried your solution of adding a new auto start entry.
After testing this on a page where the first try failed, everything seems to be fine.
So again thank you for your help.
Hi Patrick,
glad it helped!. 
I still don’t understand as to why this blanking screen problem is still there after all these years?, I disable screensaver, I stop all power saving stuff and it still blanks!, most confusing!.
In the Software Boutique, the program Caffeine will prevent screen idle. Makes life a trifle easier.