Hi All, I upgraded my machine to Sierra and it knocked out the audio. There are no output devices to select. If I run audio_codecdetect_v2.3.command in the Terminal, I get this output: "HDMI audio codec(s) Onboard audio codec Realtek: 0x10ec0900 Name: Realtek ALC1150 Audio ID: 1 Valid audio codec, audio device and Audio ID; audio injection is working Finished" There is an awful lot of info and suggested fixes but not sure where to start. Any tips appreciated. Thanks!