I have a small home server using Fedora 13 as operating system.

Since the upgrade to Fedora 13 I cannot start the X11 server. (I need it to use vnc)

When I try to start the server, both the nouveau and the original NVIDIA driver claim that there's no physical monitor attached (which is true) and that the X server cannot start because the initial display modes cannot be probed.

I tried to manually add the display modes to xorg.conf but they seem to be ignored.

Some forums suggest to simply use the VESA driver in this situation, but since I can't get it run either (different, more obscure message) I want to get it working with the nouveau driver as a matter of principle.

Temporarily attaching a monitor would mean a lot of work for me (> 1 hour and currently it's almost 35°C/95°F in my home) I want to try that only if that definitely fixes the problem and stays that way if I remove the monitor again)

How can I make the driver work without having a physical monitor attached?

Thank you for your time and your help!