can u control dp using ur mob xD
YES if they're using the same WiFi. Even communicating through it might be possible.
u can run linux under android maybe when put the server browser and linux together i think. it should work then
Well, it would lag horribly - if you won't install GPU drivers with a 3D acceleration, you will get about 7fps.
It might be real without installing a PC linux distro, there are already apps running Q2 on android.
+It would be nearly impossible to aim since it's hard enough with a touchpad.