I am late to the party, but i have the same issue.
Got Pwnpi to boot with this tweaked image (PwnPi 3.0, FruitWifi 2.1.2 for B+ en pi2):
https://drive.google.com/file/d/0Byuzy8 ... RGSE0/view
Boots after replacing the firmware files with the ones from:
Super happy after booting.
Then i did startx....
Openbox started with conky running but mouse and keyboard are not responding. Numlock led , caps lock led also not going on when pushing the buttons. Reconnecting mouse and keyboard has no effect.
System is not frozen (i think) because conky keeps updating the info on the screen.
Any advice on how to get mouse and keyboard working in Pwnpi 3 in OpenBox?