Using Kubuntu 20.04. I have a ham radio tranceiver that has its audio output connected to the rear mic input. In alsamixer (from command line), I've got its volume set and passthrough enabled with auto-mute disabled. However, no audio comes through the speakers unless I open pavucontrol. This is just plain old analog output, not using HDMI, surround sound, or anything fancy. Output devices in pavucontrol is set to LineOut (which connect to amplified speakers). Input devices is Monitor of Built-in Audio Analog Stereo. Configuration tab has Built-in Audio set to Analog Stereo Output and the HDMI output is turned off.
If I close pavucontrol, the audio is still there for about 5 seconds and then disappears. All I have to do to get it back is open pavucontrol. I've had this configuration going for years but I guess a recent update broke something and I cannot seem to find the right setting(s) to make it happy. Amy ideas?
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