It's not a problem of driving the port, but waking it up. It usually appears as /dev/ttyS4, but the device isn't there until the wacom_acpi module is loaded.
-- wacom_acpi https://launchpad.net/bugs/57922 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
