How do you change the refresh rate for your monitor?

PDog · 10-23-2003, 11:13 PM

Red Hat 9

Robert0380 · 10-24-2003, 01:14 AM

not sure exactly but it should be somewhere in the XF86Config or XF86Config-4 file located in /etc/X11/

if u play with those files i recommend changing your default runlevel to 3 in /etc/inittab and using startx incase u fudge sumthing up, and also make backup copies of those files.

a good way to regenerate XF86Config files also is to boot up a knoppix CD and let it generate one for u, save them to floppy, and put them in the X11 directory (i did this for my gentoo install).

euangray · 10-24-2003, 05:11 AM

In the monitor section of XF86Config-4 you can add:

VertRefresh 50-75
HorizSync 30-80

for example - check the real figures from your monitor handbook as you can destroy it using the wrong numbers.

Euan

aaa · 10-24-2003, 09:31 AM

Quote:

VertRefresh 50-75
HorizSync 30-80

These are just limits so your monitor doesn't get messed up. I think the real refresh rate is controled by the modeline for what ever mode your using.

Frustin · 10-24-2003, 10:10 AM

you dont need to touch the modeline anymore its done automagically.

marto · 10-25-2003, 08:22 AM

Hi everyone,
I'm using Mandrake 9.1 and I have the same problem of PDog. The limits in my XF86Config-4 are set to the right values, but I can't change refresh rate for my monitor; I actually run 1280x960@85Hz but I know I can set 1280x960@100Hz.
I tried to understand something on the modelines, but man pages say I have to know some specific rates that are not reported in the monitor manual nor on the manifacturer web site. Does someone know how I can determine that ?
My monitor is SONY CPD-G400

Thank you