On Sat, 31 Mar 2007, Arto Huusko wrote:
> When I start X with "Load "dri"" in the modules section, the system
> just hangs (with no signal on monitor). Even though I had
> (sleep 60; shutdown -r) running in the background and ddb.onpanic=0,
> the machine wouldn't reboot, so apparently it locked up. And of course
> there's no Xorg.log.

Try adding the "NoTrapSignals" option to the ServerFlags section of 
xorg.conf. Also, I tend to use ddb.tee_msgbuf=1 sysctl so I can see any 
errors after a reboot.

Cheers,
Jared