I found a small hitch when installing wsjtx on 20.10, in the manual it states for Radio serial port
/dev/ttyUSB0 however after digging around i found i had to define /dev/ttyACM0 for my ic705
which i have to define as a ic7300 at the minute using wsjtx 2.2.2.
Possibly i missed some text in the manual but i hope this will help others.
73 Richard PA3GCU