Comment 17 for bug 1504175

(In reply to flocculant from comment #5)
> Created attachment 120182 [details]
> pulse verbose log
>
> Hard to know exactly when it was. But I tried to stop the logging almost
> immediately after I had started pavucontrol and got the mute going on. Hope
> that helps.

Thanks. It seems the big hickup (about 2 seconds) is below. Because pavucontrol starts recording from all sources, that includes the usb webcam mic. Just to check if this is the actual cause, could you try disconnecting the webcam and see if the problem goes away?

( 22.253| 0.000) I: [pulseaudio] source-output.c: Trying to change sample rate
( 22.253| 0.000) D: [pulseaudio] module-suspend-on-idle.c: Source alsa_input.usb-046d_0825_121F40B0-02.analog-mono becomes busy, resuming.
( 22.253| 0.000) D: [pulseaudio] source.c: Suspend cause of source alsa_input.usb-046d_0825_121F40B0-02.analog-mono is 0x0000, resuming
( 22.254| 0.000) D: [pulseaudio] reserve-wrap.c: Successfully acquired reservation lock on device 'Audio2'
( 22.254| 0.000) I: [alsa-source-USB Audio] alsa-source.c: Trying resume...
( 22.345| 0.091) D: [alsa-sink-Multichannel] protocol-native.c: Implicit underrun of ''Es Vedra' by 'The Orb Featuring David Gilmour''
( 22.815| 0.470) I: [alsa-source-USB Audio] alsa-util.c: Disabling tsched mode since BATCH flag is set
( 22.816| 0.000) D: [alsa-source-USB Audio] alsa-util.c: Maximum hw buffer size is 10922 ms
( 24.127| 1.311) D: [alsa-source-USB Audio] alsa-util.c: Set buffer size first (to 4797 samples), period size second (to 1199 samples).
( 24.131| 0.003) D: [alsa-source-USB Audio] alsa-source.c: hwbuf_unused=0
( 24.131| 0.000) D: [alsa-source-USB Audio] alsa-source.c: setting avail_min=1
( 24.131| 0.000) I: [alsa-source-USB Audio] alsa-source.c: Resumed successfully...
( 24.131| 0.000) I: [alsa-source-USB Audio] alsa-source.c: Starting capture.