Screen goes blank after 15 minutes

[bean]

How do i prevent that the screen wont go blank after 15 minutes? Lately this has come to frustrate me, well not much because Porteus is at my second computer and i would like that the screen is on at least 1 hour so i would not have to move mouse at every 15 minutes especially if i listen new music. (So i could see track listing).
I found this from Google: http://www.cyberciti.biz/tips/linux-dis ... blank.html
Where is this ~/.xinitrc file? How do you kill x windows system. And, is that link relevant to my problem or does it concern terminal?
I've also tried to change settings at power management without any result.
I also tried these instructions: http://forum.porteus.org/viewtopic.php?f=103&t=2066
I did disable DPMS and screen did not go blank but after 1 hour my computer shut down itself or started to hibernate.
I'm using Porteus 2.1 x64 Xfce

[jmhoward56]

One thing you might also check is that many LCD monitors have their own built in power save features which may be activating. On my monitor there is a menu button you press which pops a menu up on screen with various features you can change such as horizontal or vertical position, color balance, etc... Power save is also a feature which I turned off. I do not think that DPMS adjusts this feature of the monitor.

[francois]

It has to be tied to power management. I am trying it right now and will report. I work with the kde environment. Which is yours?

kde > Settings > kde system settings > power management and unselect suspend session.

[fanthom]

must be some setting in the XFCE power management. unfortunately i'm not familiar with this DE at all so cant tell you which option to tweak. please search system menu.