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Old 04-19-2004, 01:59 PM   #1
Registered: Apr 2004
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Screen goes blank after about 10 minutes

Hey, i am a newbi with linux. I am running redhat 8 and, well this isn't really a problem, but, when there is no activity my screen goes blank after about 10 - 15 min then my monitor shuts off after about 20 - 30 min. I figure this is some kind of power management, but i was wondering if there is a way to disable this. Any help would be greatly appreciated. Aslo i have my screensaver disabled.


Old 04-19-2004, 02:28 PM   #2
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It would help to know which window manager you are running ie: kde, gnome, flux...

Either way you are correct about it being power management. Have a look for "power management" in your menu and you should find a way to disable it. I know for a fact it is in the kde menu...
Old 04-19-2004, 02:29 PM   #3
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I am using genome environment. I hope this helps.
Old 04-19-2004, 09:05 PM   #4
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You're using Gnome, not Genome. :-D

Something to try would be this command in a terminal:
xset -dpms
That will disable dpms which is what controls power management in X with respect to your monitor.
If you want to get your hands dirty, the best way to disable it would be to edit /etc/X11/XF86Config-4 (or XF86Config).

You'll be looking for a section like this (taken from mine in Slack 9.1):
Section "Monitor"

    Identifier  "SVA"

# HorizSync is in kHz unless units are specified.
# HorizSync may be a comma separated list of discrete values, or a
# comma separated list of ranges of values.
   # DisplaySize        320 255
    HorizSync   24.0 - 80.0
    VertRefresh 50.0 - 75.0
    Option      "dpms"
    Option      "MonitorLayout" "TDMS"
    Option      "DDCMode" "on"

You'll notice the line that says Option "dpms"
You can comment that option out by simply entering a hash # in front of it, as you see is the prefix before the other "comments" within that section above.

You may also see some options as far as times for DPMS actions, like standby, shutoff, etc.
You can comment those out too. Save the file and restart your X session and it should take effect.

May be best to do that editing while in command line mode, as Gnome or another app may be saving the XF86Config file on exit, and you'd lose your changes. Then when it happens again, you'll be thinking "Why didn't it work???".



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