Newsgroups: comp.os.linux.redhat, comp.os.linux.hardware
Date: 2002-01-06 12:23:52 PST

> Since upgrading to Redhat 7.2 (Kernel 2.4.9-13), I've apparently
> lost the ability to control the power saving modes of my monitor.
> Worked just fine with Redhat 7.0 (and earlier).
>
> Using KDE 2.2-10.
> Attempting to set power saving modes from Control Panel.
> Also tried to use command-line program called 'dpms'.
>
> No luck.

Check your /etc/X11/XF86Config-4 file. There should be a line that says

Option "dpms"

in the "Device" section. Why Redhat's X configuration program didn't put that in there, I have no idea, but it needs to be there. Put it in there and restart X, then things should work right.

Also, if you are running X as root (*don't* *do* *that*) then some things like screensavers will not work.

Matt G