Solved: Flashing failing immediately on Linux

ESPHome
1

I have been trying to follow the Atom Echo tutorial to flash my first ESPHome device. I got stuck on step one immediately. My Pop_OS linux just wouldn’t even.

I found out that the process never even happened by opening the browser console and seeing the connection didn’t even initialize:

failed to execute ‘open’ on ‘SerialPort’: Failed to open serial port.

I googled for a bit and found out that on Linux you might need permissions to access a device. These can be gotten by running:

sudo setfacl -m u:USERNAME:rw /dev/ttyUSB0
13 Likes
2

Thank you this solved a headache I just couldn’t crack

3

Yes, Thank you! I just switched to Fedora from Windows and this has been my headache for the last two weeks.

4

Created an account just to say thanks. I’ve been trying to figure this out forever and this is what it was. Thanks again!

5

Good morning! Still helping users (me) with this, thanks!

6

leaving here for the future, in my case it was my user not assigned to dialup group, easy solution here Serial port terminal > Cannot open /dev/ttyS0: Permission denied - Ask Ubuntu