Check your hardware
First you should make sure that your rtl-sdr stick is properly connected to your c.h.i.p and that your power source is suitable to drive the chip plus the rtl-sdr. Some of them are consuming more than 500mA (which is out of spec for USB2.0) which can cause the system crashing if under load.
Connect your rtl-sdr to the c.h.i.p, login and run
lsusb -t. You should see an output like the one on the screenshot below. The last two lines are the rtl-sdr stick.