The Linux ttyACM0 drama - more details after a lot of experimenting

Linux Mint 17.3

I resurect this post because i have the problem of missing /dev/ttyACM0 and read lot of pages without solution.

But finally I perform these (seeming irrelevant) steps, probably only the last 'restart' fix the port problem, but no way to check it.

(Arduino was tested OK on another PC)

  1. Install old version of Arduino 1:1.0.5 (from Linux Mint repos) (no change)
  2. Install a USB mem and format (Magic, or not)
  3. sudo /etc/init.d/udev restart

and then the com port appears in the 'ports' list

Hope this help !