I have a 3D printer, with which my PC can communicate through
crw-rw---- 1 root uucp 166, 0 16 nov 14:58 ttyACM0
The 3D printing application
repetierHost requires read/write access to this device in order to function. If I 'naively' start the application without any preparation, the application doesn't work.
If I run the application as root, it works.
If I run the application as a normal user with (supplementary) group
uucp, it still doesn't work.
If I give
/dev/ttyACM0 the permission flags
rw-rw-rw-, and run it with my normal user, it works.
(Why) does my permission through the
uucp group not pass on to the application?
I would not be opposed to just giving the file
rw-rw-rw- permissions, but these are reset when the device is disconnected and reconnected. If I can't make this work through the
uucp group, how can I instead make the change to the permission flags persistent?