Screen resolution using a KVM switch

[Yorkie]

I have a KVM (Keyboard, Video, Mouse) switch which is stopping Ubuntu 9.10 from getting the EDID information from the monitor on startup.
The resolution at startup is 800x600 and lower resolutions are available but nothing higher.

I have plugged the monitor directly into the computer and the screen is OK and gives all the resolutions available from the monitor.

I got the EDID information from the monitor when it was plugged directly into the computer using "sudo get-edid". Then I put this information into the Xorg.conf file and did a restart with the KVM switch in place.

However the screen resolution was back at 800x600 with nothing higher available.

The xorg.conf file still has the information from the "edid" request so it has not reverted to the old file.

I understand that 9.10 does not have an xorg.conf file but I upgraded from 8.?? to 9.10 and I think that it came from there originally.

The question is how can I get/force 9.10 to read and use the information from the xorg.conf file so that I can get the resolution I want?

Or is there another way?

I tried to pipe the output of edid into a file whilst logged in as root :

 [sudo get-edid > /etc/X11/edidinfo.edid
bash: /etc/X11/edidinfo.edid: Permission denied][

So that I could refer to it in the xorg.conf file - Why was permission denied?


Regards, Yorkie.

[MikeTbob]

Hello and Welcome
You might want to try, not using an /etc/X11/xorg.conf file....sometime these things just work correctly without using it.
I'd suggest that if you have an Nvidia card, to install the nvdia-settings program, this might let you configure things correctly.

I have a KVM (Keyboard, Video, Mouse) switch which is stopping Ubuntu 9.10 from getting the EDID information from the monitor on startup.
The resolution at startup is 800x600 and lower resolutions are available but nothing higher.

I have plugged the monitor directly into the computer and the screen is OK and gives all the resolutions available from the monitor.

I got the EDID information from the monitor when it was plugged directly into the computer using "sudo get-edid". Then I put this information into the Xorg.conf file and did a restart with the KVM switch in place.

However the screen resolution was back at 800x600 with nothing higher available.

The xorg.conf file still has the information from the "edid" request so it has not reverted to the old file.

I understand that 9.10 does not have an xorg.conf file but I upgraded from 8.?? to 9.10 and I think that it came from there originally.

The question is how can I get/force 9.10 to read and use the information from the xorg.conf file so that I can get the resolution I want?

Or is there another way?

I tried to pipe the output of edid into a file whilst logged in as root :

 [sudo get-edid > /etc/X11/edidinfo.edid
bash: /etc/X11/edidinfo.edid: Permission denied][

So that I could refer to it in the xorg.conf file - Why was permission denied?


Regards, Yorkie.