Solved KDE loads fine through KDM - won't from command line

I'm really new to FreeBSD/Xorg so I'm hoping this is something stupid.

I installed Xorg and KDE4. When I have
in /etc/rc.conf, the system boots up to KDM and logging in brings up the desktop. Everything's great.

What I want, though, is to log into command line and start KDE manually from there. Each time I try startx, startx kde, or startx 'which kde', I get a black screen (power-save mode on the monitors) and can't recover from that w/o a reboot.

Anyone have ideas why KDM will start everything fine, but KDE won't load manually? I looked in /var/log/Xorg.x.log files but nothing stands out.

Many thanks.