Issue with OctoPrint not finding my serial port?

I'm not really sure what information I should provide here, but I will provide what I think is reasonable.

I've spent several hours browsing previous topics and googling in general, but none of the suggestions I found have been helpful. I have also referred to the FAQ to no avail.

Basically, I used the docker-compose.yml from the GitHub to create a stack in Portainer. I did not adjust any settings out of the door as I wanted to verify that the basics would work first. I got the web interface to load on port 80, which it defaulted to, and went through the little intro thing. Upon loading up the UI I am met with "No serial port found".

So far, I have verified that my printer is connected via the serial port at /dev/ttyUSB0 (through the use of "ls /dev/tty*" and unplugging/replugging the machine), and I have added that to the "additional serial ports" box in the OctoPrint Settings under Serial Connection. I have also verified that the USB cable I am using carries data and is working properly. Beyond that I have literally no idea what to do. I would appreciate some help. Please let me know what other information I can provide.

Other Information:

Printer: Ender 3 Pro
OS: Linux Mint 21


Needed to add

     - /dev/ttyUSB0:/dev/ttyUSB0

To the docker-compose.yml.

A suggested post showed up under this one and I found my issue there. I had somehow never come across it while troubleshooting this.

1 Like

For a visual understanding of how you can run a container in the Portainer via Stacks

version: "3.7"
    image: octoprint/octoprint:1.8.6
    container_name: octoprint
    privileged: true
    network_mode: bridge
    restart: always
      - "8500:80"
     - /dev/ttyUSB0:/dev/ttyUSB0
     - /home/docker:/octoprint