I'm using the radeon driver and thus suspend kills the system. I'm trying to get a 'lame' suspend by sending xdm a -HUP signal and killing the drm and radeon modules with 'kldunload -f'. However kldunload ignores the '-f' option on my system. The output is always the same (with and without '-f"): kldunload: can't unload file: Device Busy The way I understand the manpage '-f' should force unloading anyway.