I use a box for both mythtv and streaming vlc. I need to kill 
mythtvbackend to make the dvb adapter available to vlc, which is not a 
problem. However, something has changed that I am not aware of and even 
though I killall myth, vlc says the dvb adapter is not available. Is 
there a way to issue a command that frees up the adapter, regardless of 
what is using it, or  at least find the process that is using it?