i haven 't had time to look further into this; my apologies. still haven't got time, but i know that an ubuntu installation requires group 'dialout' for users, and that the relevant character devices have that too.
so try "sudo chown root:dialout /dev/ttyS4" ...
i hope this solves it.
i haven 't had time to look further into this; my apologies. still haven't got time, but i know that an ubuntu installation requires group 'dialout' for users, and that the relevant character devices have that too.
so try "sudo chown root:dialout /dev/ttyS4" ...
i hope this solves it.