Serial port permission denied Ubuntu 20.04
DrLucky42 last edited by
I have installed MatterControl 2.0 on an admin account successfully on a new laptop running Ubuntu 20.04
Whenever I attempt to set up my printer with MatterControl, I get the alert saying permission denied and that my account needs permission to access the serial ports.
I used the recommended
$ sudo gpasswd -a $USER dialout
command as well as similar commands found online. I have confirmed my account does indeed have permission to access the serial ports now, and I did log out and back in, but MatterControl still comes up with this permission denied alert. I even tried uninstalling MC, confirming port permissions, and re-installing MC, but the alert persists.
Any direction will be greatly appreciated!
plew last edited by
I have not tried MC in Ubuntu yet. But I can offer you a few thoughts.
If you run the following command, does it display the group was added?;
Also found this post about modemmanager causing problems with dialout.
Other thoughts would be; try loading the software as root/adding user to root group/allowing login as root
(I understand security implications but just thoughts for troubleshooting)