Failed connecting to port /dev/ttyACM0 status:Error

[zeynepkoyun]

When I got this error, it was solved with the command "sudo chmod a+rw /dev/ttyACM0" before, but now the error continues. I would be glad if you help.

[3dsf]

you F455 could be at a different port depending on if you have other usb devices (most likely a camera) attached.
run sudo dmesg | grep 'Intel F450' -A 5 | grep ttyACM to see where it is attached

using sudo usermod -a -G dialout $USER is a more robust solution for granting permissions to a user, especially if the port allocation might change

https://github.com/IntelRealSense/RealSenseID/tree/master/tools#linux----compilation-and-usage

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Or you could also look at a solution like https://unix.stackexchange.com/questions/66901/how-to-bind-usb-device-under-a-static-name (and add in permissions similar to how they did with the librealsense cameras after assigning it a static address)

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Each method has different permission implications and some may work better or worse (or have no significant affect) for your use case

[zeynepkoyun]

@3dsf Thank you for your answer,

I ran the commands as you mentioned in your comment. (https://github.com/IntelRealSense/RealSenseID/tree/master/tools#linux----compilation-and-usage) However, when the error persisted, I saw on a different site. I tried the command "sudo chmod a+rw /dev/ttyACM0" but when the error occurs, I run the command "sudo dmesg | grep 'Intel F450' -A 5 | grep ttyACM" and multiple devices appear. It fixes itself after a while.