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Old 09-06-2007, 03:07 PM   #1
JMJ_coder
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Screen Blanking Out


Hello,

I just updated to Slackware 12 and am running TWM. My problem is that X will blank the screen after 10 minutes idle. When I ran KDE on Slackware 11 there was a setting in the display that solved this - though it still happened at the login screen. I no longer have KDE, but it is still happening with TWM and XDM.

I have check my xorg.conf for DPMS - it is not there.
I have run xset -dpms - no effect.
I have run xscreensaver-demo and disabled screen saver and power settings - no effect.

I don't know where to go next.




I want to solve this because I don't want it to happen and I find it a little annoying. Imagine Linux acting like Windows!!! If I wanted X to act this way I would have told it to!!! (o.k - that's enough for my rant)
 
Old 09-06-2007, 03:39 PM   #2
simcox1
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There's a setting at the top of /etc/rc.d/rc.M.

# Screen blanks after 15 minutes idle time, and powers down in one hour
# if the kernel supports APM or ACPI power management:
/bin/setterm -blank 15 -powersave powerdown -powerdown 60


Which you can alter to your liking, or comment out.
 
Old 09-09-2007, 08:44 AM   #3
JMJ_coder
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Hello,

Quote:
Originally Posted by simcox1 View Post
There's a setting at the top of /etc/rc.d/rc.M.

# Screen blanks after 15 minutes idle time, and powers down in one hour
# if the kernel supports APM or ACPI power management:
/bin/setterm -blank 15 -powersave powerdown -powerdown 60


Which you can alter to your liking, or comment out.
Thanks.

I commented out this line, however, the problem persists.

Looking closely at the behavior, the screen goes blank after 10 minutes into a kind of blank screensaver, but the monitor light is still solid and you can tell the monitor is still working (not a complete black - more like ultra indigo blue and you can see the complete black around the edges of the monitor). After about 15-20 minutes, then the screen goes completely blank and the monitor light starts flashing (I assume this means it goes into hybernation mode).
 
Old 09-09-2007, 04:41 PM   #4
JMJ_coder
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Hello,

I found a half-way fix for this.

I added Options "DPMS" "false" to my xorg.conf Monitor section.

I also changed that line in rc.M to read:
Code:
/bin/setterm -blank 0 -powersave off -powerdown 0

This works until I open a window, then the screen blanks out again (even if I subsequently close all windows). This seems to be an issue with the DPMS and not the rc.M line - which did what it is supposed to; it doesn't powerdown the Monitor into a hybernation mode anymore.


So I'm about 1/2 way there, but again I am out of ideas at the moment.
 
Old 09-09-2007, 06:45 PM   #5
T3slider
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See this thread for another method that works completely and reliably: http://www.linuxquestions.org/questi...d.php?t=582229
 
  


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