I have a ps2 USB controller adapter, and was successfully playing legend of dragoon on my nexus 7. Out of nowhere the controller stops working. I continue to plug in a another USB gamepad (that doesn't require drivers) and still couldn't map buttons to it through the emulator. I also plugged in a USB keyboard, still nothing. I don't understand what happened.. Just the other day i could plug my ps2 controller into my tablet and play psx games like it was the real thing. can i replace usb port drivers or something? Any comments would be greatly appreciated..