Ubuntu: /dev/ttyS* permission denied



Question:

Answers posted so far have not really addressed a good solution. Just installed 15.10 and get permission denied on bootup or reboot, even after changing them to crw-rw-rw from crw-rw----!


Solution:1

You need to add the current user to dialout group.

Run

sudo usermod -aG dialout $USER  

Then you will be allowed to write to /dev/ttyS* after log off and log on.


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