stdglue

Is your side of the terminal accepting the remap G90.3 or G84.3 of cycle_prolog?

I haven't tested if remap python=<filename> instead of a ngc=<filename> accepts cycle_prolog yet.

cycle_prolong might not be necessary if remap python=<filename>.

PathPilot II and lathe T0101 is functional but I don't have access to Linux Mint, command line prompt and files to compare.

I mean open a terminal and run linuxcnc from the terminal.

Linuxcnc prints lots of info only on the terminal.

Terminal /sim.axis linuxcnc lathe.ini received warning m6 no modalgroup but might be optional and didn't effect remap execution earlier.  Altered to REMAP=M6 python=ignore_m6 modalgroup=10.  Reopened linuxcnc lathe.ini and no warning about m6.  The inifile warns containing DOS-style line endings.  Still lathe display is error message when trying to run T0101.

please archive all your config files and post them here.

The config files are all the same as standard upload of AXIS 2.8.2.11 lathe display.  The only additional file is python and extra script at lathe.ini as foregoing.