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Update: I found the commit, it can be viewed here: https://git.linaro.org/landing-teams/working/qualcomm/kernel.git/commit/?h=debian-qcom-dragonboard410c-17.04&id=bffd64e24b45824e495532b0521cb5c5568c6ee0

The software is trying to use libusb-1.0 library to communicate over USB. You many want to install Zadig drivers (https://zadig.akeo.ie/) first. The compilation error is a bit cryptic - could...

Thanks for the info. How do you power your arduino? Via USB cable only, or did you use external power supply? BTW. -v should just enable the verbose mode. Perhaps...

OK. interesting. USB power usually drops the voltage from 5V to ~4.7V depending on the cable quality and its length - in such case I would have expected it to...

Thanks for the fix **rreilink**. It is now merged.

> I read my ATF22V10C and it shows Unknown GAL, Could you please write the exact command and parameters you use? Then also write the log printed on the console....

> But using the i parameter to read the information, all ATF22V10C return unknown chip. Please not the 'i' command does not do autodetection. Afterburner can not detect the GAL...

Ok. I can see 2 issues here. **Dale-Lien**: I think your programming voltage is somehow unstable. That would explain why it sometimes works and sometimes it does not work. Try...

**rrelink**: I think here is the clue: https://arduino.stackexchange.com/questions/439/why-does-starting-the-serial-monitor-restart-the-sketch .. from the answer...: "Setting the flow control to none will allow you to connect/disconnect from the serial without resetting your board."...

The first output shows "testing gal 4" the second one shows "testing gal 6". So it looks like it might be the same error **rrelink** identified - the Arduino resets...