[concertmaster3]

I always had to unplug when I had a USB pedal. I know that it can be a hassle, but the pedal IS a keyboard, with only 2 keys (page up/page down for most pedals). On my current tablet (ASUS 300T), an option comes up at the bottom on the status bar to toggle "Physical Keyboard" on/off. I'm not sure if this is an ASUS thing or an overall android thing.

I attached 2 screenshots to see if you have this or not. Hope that it helps!