Opening /dev/cuau1 works successfully; incoming data arrives and is read just fine. stty verifies parameters normally, and this is a standard serial port on real hardware (no USB or anything else involved here.) Any attempt to write to /dev/cuau1 while open causes the system to hang; it returns ping and completes 3 way handshakes but is unresponsive via ssh and on console. Same cabling, same configuration works on another OS. Levels have been verified with a digital volt meter, and RS232 analyzer. How-To-Repeat: 100% repeatable with either my build or GENERIC from boottime.
For bugs matching the following criteria: Status: In Progress Changed: (is less than) 2014-06-01 Reset to default assignee and clear in-progress tags. Mail being skipped
^Triage: I'm sorry that this PR did not get addressed in a timely fashion. By now, the version that it was created against is long out of support. Please re-open if it is still a problem on a supported version.