So I have Arch with KDE 4.4 on my laptop. My laptop has a VGA port on the side. In Windows (also on the laptop), I can readily plug in and unplug a monitor into that port.

However, in Arch, if I plug a monitor into that port when the system is already running, nothing happens at all. If it's already plugged in when Arch boots, X automatically mirrors the display onto both (at the wrong resolution might I add). If I try to either access the KDE display properties, or run xrandr, this is what happens:
4shared.com/video/nTOTPF31/SANY0032.html

It keeps on doing that indefinitely.

Any ideas? I'll see if I can post my xorg.conf.