Powermac G5 won't boot headless?

[Alexandre Gauthier <supernaut@underwares.org>]

Hi!

I am planning on using a Dual PowerMac G5 as a server. I installed Debian 
Stable and apt-pinned a few things, such as the kernel from Testing.

All is well, until I realized that somehow, the machine apparently will NOT 
boot headless, that is, if the monitor is not present... this is slightly 
inconvenient in the case of a mail server that will almost never have a 
monitor plugged in, unless something is broken.

I was wondering if anyone had an idea about this, or maybe a workaround?

Thanks!

--
Alexandre Gauthier
Network Analyst/Analyste Réseau
Underwares.org