Tempest Posted March 22, 2020 Share Posted March 22, 2020 4 hours ago, pusakat said: You may need to add your user to the group that has rw permissions to the serial port. On Ubuntu, `sudo adduser username dialout` should do the trick. On Arch, I'm not sure if adduser would do the trick. The alternative command would be `sudo gpasswd -a username dialout`. Be sure to logout and login again for the new group permissions to take effect. To find out what group has rw permissions on the device, use `ls -g /dev/ttyS0` or `ls -g /dev/ttyUSB0`. It'll probably show `dialout`. If it isn't, change all references to dialout in the previous commands to the group that gets displayed. In Arch Dialout is apparently UUCP. I added myself to that. I did ls -g /dev/ttyS0 and got the premissions, but ls -g /dev/ttyUSB0 returned no such file or directory. Not sure what to make of that since it should be part of UUCP. Quote Link to comment Share on other sites More sharing options...
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