Just installed Raspbian on yet another Raspberry Pi 3. Tried running the Arduino IDE, no problems ... until I tried to "Upload Using Programmer". I got this:
avrdude: Warning: cannot open USB device: Permission denied
avrdude: Error: Could not find USBtiny device (0x1781/0xc9f)
If I run the IDE using root privileges (i.e.,
sudo), of course it works.
This is not the same behavior I see on my Fedora 29 machine. No need for
sudo there.
Any ideas?
Oh yeah, I'm using 1.8.9 with the latest Raspbian updates.