ok i did a quick test with /dev/ttyACM0 in cutecom.
Ther’es DEFINATELY issues on the SerialUSB side. Same setup as before but instead of the serial monitor I just used a dumb terminal on /dev/ttyACM0 (which is what it should be connected to as that 's the progrmaming port too). The IDE was NOT running at all during this test and you can see garbage characters being sent out from the device node.
