How to forbid to be disconnected to the screen?

English Install/Boot/Login
1

after install openSUSE12.1 have this problem:

If not to touch the laptop some time the display becomes black it (is disconnected)

The interdiction on screensaver - hasn’t helped.
What can i do ?

When was opeSUSE11.4 such problems wasn’t

Serg

2

Try looking in Configure Desktop -> Power Management -> Power Profiles.
Assuming KDE.

3

I`m use gnome3.2…Where this is in the Gnome ?

Serg