I am using Ubuntu 11.10 and my screensaver keeps coming on while I'm watching a movie. I don't remember this happening in 11.04 and can't remember how to stop it?
I've seen this happening with VLC as well as Banshee. The only solution I could find is to run Caffeine.
sudo add-apt-repository ppa:caffeine-developers/ppa sudo apt-get update sudo apt-get install caffeine
After that, run caffeine, go to its preferences and have it start on login. It sits in your system tray. Whenever you then watch a movie, you'll need to click on its system tray icon and select 'disable screensaver'.
It is not the best solution but it is the only one I can see in these early days.
From my answer on Unix.SE, you can simply run,
echo "disable-screensaver=0" >> ~/.config/vlc/vlcrc
For more information see "When using VLC, why does my screen saver keep waking up?"
Expanding on this answer, one can type
xset s on; vlc; xset s off;
from a terminal to launch vlc, or write a bash script
#!/bin/bash xset s on; vlc; xset s off;
or a desktop file whose command is something like
set s on; vlc %U; xset s off;
and set the association file/mimetype to it to open appropriate mimetypes. "%U" works for TDE, for other desktops, you might need to find the right syntax.
I made a script which can close xscreensaver when VLC is open, and even closes redshift (eye protector app) when it exists.
You can try it from here: Close-Screensaver-Redshift-when-VLC-opened-Script