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Old 01-11-2002, 05:06 AM   #1
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Registered: Jan 2002
Distribution: Debian
Posts: 8

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Angry Uncontrollable Screen Blanking

Greetings, all!

I am running Debian with the 2.0.36 kernel.

My current irritation is the uncontrollable blanking of my monitor at about 10 minutes of inactivity. This occurs when I am in console or in Xwindow display.

I have a strong suspicion that this is a BIOS level setting that I have missed. Unfortunately, I am working without the appropriate BIOS/Motherboard manual. From what I can tell, I have an Award Software, Inc. BIOS. The info at the top of my setting page is:


I've got all of the Power Management Settings disabled that are possible...

Here are the details:

Pwer Management: Disable
PM Control by APM: No
Video Off Method: DPMS
(Note: I have three choices here and I've tried all three with the same results... the choices are:
Blank Screen
V/H SYNC+Blank
End note)
Modem Use IRQ: NA
CPU Fan Power Green: Disable
Doze Mode: Disable
Standby Mode: Disable
HDD Power Down: Disable

Next there is a heading for:
*** Wake Up Events In Doze & Standby ***
IRQ3 (Wake-Up Event): ON
IRQ4 (Wake-Up Event): ON
IRQ8 (Wake-Up Event): OFF
IRQ12 (Wake-Up Event): ON

and there is a group:
*** Power Down & Resume Events ***
IRQ3 (COM 2) : ON
IRQ4 (COM 1) : ON
IRQ5 (LPT 2) : ON
IRQ6 (Floppy Disk) : ON
IRQ7 (LPT 2) : ON
IRQ8 (RTC Alarm) : OFF
IRQ9 (IRQ2 Redir) : ON
IRQ10 (Reserved) : ON
IRQ11 (Reserved) : ON
IRQ12 (PS/2 Mouse) : ON
IRQ13 (Coprocessor): ON
IRQ14 (Hard Disk) : ON
IRQ15 (Reserved) : ON

Does anyone have any ideas?? Need to see the info from another page??

Note: I've tried:

#setterm -powersave off -blank 0

and I'm still getting the undesirable screen blanking...


Old 01-11-2002, 09:57 AM   #2
Senior Member
Registered: Dec 2001
Location: The Netherlands
Distribution: Ubuntu
Posts: 1,316

Rep: Reputation: 47
The setterm is for disabling it in the console mode. And xset s off will usually disable it in X. But that's probably not it if you say the setterm doesn't help. I don't think linux uses the BIOS parameters for powersaving. As far as I know it's the apm daemon that takes care of that. I've never really tried to configure it so I wouldn't know how you can tell it to not switch off. But you could always disable it in the kernel. Or try and find some more information about it. I think there is some in the /usr/src/linux-x.x.x/Documentation directory.


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