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Old 02-19-2009, 05:44 AM   #1
Registered: Dec 2002
Location: algeria
Distribution: redhat 7.3, debian lenny
Posts: 622

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monitor is not detected

I install the debian on my PC, but the monitor is not detected or not adapted ( while it is for linux CD live, and windows XP). it gives the following errors :

out of range

H 86,2 KHZ

V 85

I want to use the file xorg.conf given by CDlive ( sidux for example) and copy it in the /etc/X11 of my debian, is it enougn or I need ohter configuration ?? thanks for help

best regards
Old 02-19-2009, 11:29 AM   #2
Registered: Aug 2007
Location: Zurich, Switzerland
Distribution: Gentoo
Posts: 992

Rep: Reputation: 126Reputation: 126
I think you could just edit your current xorg.conf and add (or modify if they're already existing) to the "Monitor" section something like this:
HorizSync 31.5 - 80
VertRefresh 59-75
Play around with those max frequency ranges if it still doesn't work.
Old 02-19-2009, 01:50 PM   #3
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Registered: Oct 2005
Location: Northeast Ohio
Distribution: linuxdebian
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or use ddcprobe to see what your monitor can handle in the way of resolution and refresh.. I have noticed that the use of a KVM blocks the system from probing the display, just in case you are using a KVM.. If you know the resolution and refresh rates of your display use cvt to calculate a modeline for the proper settings..

it-lenny:~$ cvt  1440 900 refresh 60
# 1440x900 59.89 Hz (CVT 1.30MA) hsync: 55.93 kHz; pclk: 106.50 MHz
Modeline "1440x900_60.00"  106.50  1440 1528 1672 1904  900 903 909 934 -hsync +vsync
insert the modeline info into your xorg.conf and away you go !!

hope that helps..

85 is a very high refresh rate for most displays.. typical LCD refresh rates are 60, 70 or 75

Last edited by farslayer; 02-19-2009 at 01:51 PM.


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