https://bugs.winehq.org/show_bug.cgi?id=43750
--- Comment #2 from phoenix-precision@gmx.co.uk --- (In reply to Alexandre Julliard from comment #1)
What does
wine reg query HKEY_LOCAL_MACHINE\Software\Wine\Ports
display?
$ wine reg query HKEY_LOCAL_MACHINE\Software\Wine\Ports
HKEY_LOCAL_MACHINE\Software\Wine\Ports COM1 REG_SZ /dev/ttyACM0