when I tried the readWrite example on an Arduino Yun I noticed that when I uploaded the sketch and rebooted the Yun, the linux chip wouldn’t boot. It seems to be a problem with the serial communication between the ATmega and linux chip. When I added a timeout in the beginning of the setup() part of the sketch, it worked fine. Maybe in HybridObject.cpp in HybridObject::init() the while construct blocks it? I’m not sure… I’m using the Arduino IDE 1.6.6. Did anyone else run into this problem?