Hi, actually I've posted a similar thread but because it's ages ago, I decided to start a new one.

I know that to disable the monitor suspension, I have to use the "xset -dpms" in the console. I've done that and it worked. At least until I resetted the machine and the DPMS was turned on again automatically. I've also deleted the "DPMS" option in the Monitor section in xorg.conf but the monitor suspension is always turned on everytime I resetted the computer. How do I set the monitor suspension off permanently?

Thanks in advance.

BTW, I used SuSe 10.0 with KDE.

You have to make sure, that xset -dpms is executed every time your X session starts. Depending on how your distro is configured, it might be sufficient to create a simple shell script in your home directory which is automatically executed when you log in.
It is called ~/.Xsession
Just put your command in there, make it executable (by typing chmod +x ~/.Xsession) and hope that I'm not telling bullshit here. ;-)

Also, in my KDE 3.5.5 there is a tab in kcontrol (KDE Control Center) to comfortable configure this stuff. It is in
Peripherals -> Display
The one with the energy star logo.

For some distributions (e.g. PCLinuxOS 0.93) it might be necessary also to switch off X Screensaver (which is another one, besides screenserver mentioned in KDE Control Center). This X Screensaver blanks screen after some inactivity even if there is no screensaver defined in KDE CC and shows white letter X on it (different size).

To take off both forms of blanking, use (as root):
xset s off
xset -dpms


And then to see if it's OK,

xset -q

timeout: 0 Means Screensaver is off.

In previous versions of PCLinuxOS it wasn't necessary to switch off explicitly this X Screensaver. However for some unknown reason this X thing comes up even unwanted in 0.93 .

Sigh... Didn't work. I tried disabling the Energy Star in KDE's Control Panel but didn't work. I tried editing the Xsession, didn't work.

BTW, when I located Xsession, I found 2 of them. One in "/etc/X11/xdm" and the other one is in "/opt/kde3/share/config/kdm/". I've added "xset -dpms" and "xset s off" to both of them and still the screen blanking occurs.

What should I do now?

Puzzling.

So when you booted into KDE, with Energy Star stuff in KDE's Control Panel turned off, what does the output of xset -q say?

Perhaps KDE or some other stuff re-enables DPMS along the way.
So... just let's make sure it is turned off again by adding it to some other random places... :-/
Let's create a simple shell script in ~/.kde/Autostart (or whatever folder you set as being the Autostart folder).

DisableDPMS.sh:
Be sure you made it executable with chmod +x DisableDPMS.sh


(Oh dear, I hope that helps. If you sometimes get that feeling that in Linux one has to invest far too much time in some trivial things, I sadly have to agree...
but "this other OS" has its own share of problems, too, I guess.)

cheers

>>So when you booted into KDE, with Energy Star stuff in KDE's Control Panel turned off, what does the output of xset -q say?

It said that the DPMS was still on.

BTW, I've tried your suggestion of making a shell script in autostart and it worked. Thanks alot.