A couple things I would try is to check the USB settings in the system settings, it should be on auto. If it won't detect/charge try the other USB settings that are available such as MSC in the system settings. A hard reset on the device might be worth trying as well. Hold down the power button for 15 seconds.

Have you updated the firmware at all?

I’m armed and I’m drinking. You don’t want to listen to advice from me, amigo.

-Max Payne