How about this: When I run phquake full-screen, I lose control of my
input devices, whether I use the included ‘go’ script which messes with
devi- or not. And when I run it windowed, it won’t take mouse input, it
says ‘volume’ variable unknown (no sound), and sometimes my keys will
‘stick’, such that I’ll continue going in one direction until I hit that key
again to stop it (not a keyboard thing - have used 2 different boards).
This is quite … upsetting when you’re battling a fiend 
Thanks anyone.
–Charles