Serial problems with Ubuntu?

One of my main problems while connecting to a serial device was a software called ModemManager which automatically opened a connection to my devices on plug-in.

The solution was to disable or remove ModemManager since I never used one of these old dialup modems with my PCs anyways.

Remove ModemManager:

apt-get purge modemmanager

or simply stop it:

systemctl stop ModemManager

Author: Anton Bracke

Software engineering student from Germany. Loves programming in PHP, JS and sometimes C.

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