Can no longer monitor when recording
Recording in LPX 10.6+. Input monitoring is engaged in prefs, and on the track. I see signal when there's input. But I can no longer hear my self when the track is armed. In fact, when I arm the track my signal disappears. When I try to record in a fresh project. The signal disappearing issue corrects, but I still can't monitor on the armed track. Can't figure out what I did, thoughts?
Not using sophisticated bus routeing for headphone mixes etc.. Just a mic feeding the input of the channel strip thru my Apogee interface. recently got a crossgrade retro fit to my Symphony i/o recently, but can't see a connection to this issue. Please help!
Mac Pro, macOS 11.2