Forcing Xorg.conf to not change (no detection)

ocgltd · 05-03-2010, 08:31 AM

I have a home theatre setup, where the hdmi output from my nvidia card goes to a 3 way splitter. I have found a modeline that all 3 monitors are happy with and all works well.

However, every bootup causes linux to detect a different (of the 3) monitor, a changing the video resolution etc..

How do I force linux to just use the Xorg.conf as is (without detecting new monitors every time and messing things up).

Thanks

smoker · 05-03-2010, 12:32 PM

You could try setting the permissions to read only on xorg.conf or copying a good copy over the modified copy after it gets through.

ocgltd · 05-03-2010, 12:35 PM

Somehow that doesn't feel like the right way ;(

I thought turning of EDID reading or something like that...

I'm using the NVidia proprietary driver in case that matters

MD

smoker · 05-03-2010, 12:51 PM

If you are using Fedora 12 then there should be no autodetecting going on. F12 doesn't use xorg.conf by default, so if there is one it takes precedence.

Unless the nvidia driver is doing it, in which case add the option
Option "UseEDID" "FALSE" in xorg.conf
http://us.download.nvidia.com/XFree8...ppendix-b.html

That took me two minutes, yet you had already thought of it. Why didn't you try it before posting ?

ocgltd · 05-03-2010, 12:59 PM

I tried the UseEDID false setting, but then it force resolution to VGA max - so it no longer remembers that the monitors can handle something higher. Do I have to then force feedb Xorg with h/v frequencies etc?

I was hoping for a sort of a "DONT CHANGE ANYTHING=TRUE"....