I have also a 3204A. I like to use it on an old acer PC with XUBUNTU (was Win XP).
I am not good in Linux.
I use the https://www.picotech.com/downloads/linux
After copy and paste 2 lines in the terminal I get (in Dutch):
"Kan niet naar '‘-’' schrijven (Gebroken pijp).----> Can not write to "-" (broken pipe) "
After copy and paste the next 2 lines of the 4 line s in the terminal, I read (in Dutch):
"E: Kan pakket picoscope niet vinden---->cannot find picoscope."
What is wrong ?