I go into settings -> Power Management, trying to change the "Put display to sleep when inactive for:" and "Dim display when idle" settings.
The changed settings are saved — if I come back to the same menu, they appear as I left them.
But when I watch a full screen video, the display does get dim every once in a while. And if I leave my laptop alone for 15 minutes, the screen does go black (and lock itself).
How can I actually change these settings? I would also want to stop it from locking itself every time it went inactive — just blank the screen.
Best Answer
Workaround
Caffeine is a program that does what you want power management to-do.
You can install caffeine by adding the ppa. you can do that in
System --> administration --> Update manager --> settings --> then tap the "other sources" tab --> add
And now press the reload button.
or you can do it in a terminal:
Then install caffeine by typing in a terminal:
Power mangament
But you could also try to set the Power management settings as system default by pressing "make default", that worked for me in 11.04 and 10.04.1.