I have a problem with my Arduino Uno board, its not mounting in my linux machine but its power is On and L light is glowing. It was working before. After I tested buttons with 12V external supply. I am facing this scenario. I tried
lsusb and i checked
/dev/ ports also i couldn't find `ttyACM. I tried with another Arduino board and its working. I think the board is gone, I need help to fix this problem.
I thought its a bootloader problem I got
new ATMEGA328p chip board is getting power on and L is blinking but port is not mounted I tried with
lsusb and also
ls /dev/ttyACM* with no result.