I have an Hitachi CM753 monitor on a machine running RedHat 7.0. The CM753 monitor is not in the standard list (though I thought it was supposed to be : refer bug #14951), however it detected its frequency ranges correctly. Unfortunately, despite enabling power-saving mode in the gnome screensaver configuration tool, the monitor is never put into standby mode. It used to be when I was running RedHat 6.2 with a modified CM751 (I think) monitor entry.
Does 'xset dpms force standby' do it? (I would guess so, but..)
No, xset dpms force standby does not do it. If I do an xset q then I get: Screen Saver: prefer blanking: yes allow exposures: yes timeout: 0 cycle: 0 DPMS (Energy Star) standby: 0 suspend: 0 off: 1200 DPMS is enabled Monitor is on This is from enabling power saving in the screensaver section of the gnome configuration tool.
I have this problem too. I have an NVidia TNT2 and a sceptre dragoneyes D98A monitor. xset +dpms xset dpms force (off|standby|suspend) all fail to do anything. It worked with RH 6.2 Perhaps this is an X 4.0 bug? this looks to be the same bug as bug #20804
I fixed this by putting the line: Option "DPMS" in the /etc/X11/XF86Config-4 file in the Monitor section. I have heard that if that doesn't work, try putting Option "power_save" The guys on the X newbie list rule! Hope that works for you!
The Option "DPMS" line in the /etc/X11/XF86Config-4 file in the Monitor section worked a treat for me.
This really needs to be done by Xconfigurator; it's not an xscreensaver bug.
It's been added in CVS a couple of weeks ago...
also, the monitor you speak of is now listed, among many others.