Everything works fine through the rear panel connectors. The cable connecting the front panel audio header to the mobo has a pinout diagram showing "sense1" and "sense2" conductors that somehow let the mobo know when a mike or headset jack is plugged in.
Question: How can I test if sense1 and sense2 are working properly? I would assume they just go to ground when a jack is inserted. That would help me eliminate the possibility of a software issue. But when I perform that test, I get no continuity to ground. Am I testing this correctly?