pulseaudio automatically unmutes S/PDIF on every new stream

Submitted by mai..@..sch.de

Assigned to pul..@..op.org

Link to original bug (#103620)

Description

Hello, I use Debian 9.2 (stretch) with the default PulseAudio 10.0 installed. My soundcard is a Realtek ALC892 onboard chip. I use the optical S/PDIF output on my mainboard.

Whenever I mute my audio via keyboard shortcut, only currently playing audio is muted. As soon as a new audio stream starts (new tab in browser, terminal-ping, etc.) the audio device is automatically unmuted and then audio is played.

I have tried to set "flat-volumes = no" in daemon.conf, without any change in behaviour.

Below is the log of muting and automatic unmute:

( 10.728| 4.983) D: [pulseaudio] protocol-native.c: Client gnome-settings-daemon changes mute of sink alsa_output.pci-0000_00_14.2.iec958-stereo. ( 10.728| 0.000) D: [pulseaudio] sink.c: The mute of sink alsa_output.pci-0000_00_14.2.iec958-stereo changed from no to yes. ( 10.728| 0.000) I: [pulseaudio] module-device-restore.c: Storing volume/mute for device+port sink:alsa_output.pci-0000_00_14.2.iec958-stereo:iec958-stereo-output. ( 20.142| 9.413) D: [pulseaudio] core-scache.c: Created sample "bell-window-system" (#0), 24604 bytes with sample spec s16le 2ch 44100Hz ( 20.142| 0.000) D: [pulseaudio] core-scache.c: Playing sample "bell-window-system" on "alsa_output.pci-0000_00_14.2.iec958-stereo" ( 20.142| 0.000) D: [pulseaudio] memblockq.c: memblockq requested: maxlength=24604, tlength=0, base=4, prebuf=1, minreq=1 maxrewind=0 ( 20.142| 0.000) D: [pulseaudio] memblockq.c: memblockq sanitized: maxlength=24604, tlength=24604, base=4, prebuf=4, minreq=4 maxrewind=0 ( 20.142| 0.000) D: [pulseaudio] module-stream-restore.c: Not restoring device for stream sink-input-by-media-role:event, because already set to 'alsa_output.pci-0000_00_14.2.iec958-stereo'. ( 20.142| 0.000) D: [pulseaudio] module-intended-roles.c: Not setting device for stream bell-window-system, because already set. ( 20.142| 0.000) D: [pulseaudio] sink-input.c: Negotiated format: pcm, format.sample_format = ""s16le"" format.rate = "44100" format.channels = "2" format.channel_map = ""front-left,front-right"" ( 20.142| 0.000) I: [pulseaudio] module-stream-restore.c: Restoring volume for sink input sink-input-by-media-role:event. ( 20.142| 0.000) I: [pulseaudio] module-stream-restore.c: Restoring mute state for sink input sink-input-by-media-role:event. ( 20.142| 0.000) D: [pulseaudio] module-suspend-on-idle.c: Sink alsa_output.pci-0000_00_14.2.iec958-stereo becomes busy, resuming. ( 20.142| 0.000) D: [pulseaudio] sink.c: Suspend cause of sink alsa_output.pci-0000_00_14.2.iec958-stereo is 0x0000, resuming ( 20.142| 0.000) D: [pulseaudio] reserve-wrap.c: Successfully acquired reservation lock on device 'Audio0' ( 20.142| 0.000) I: [alsa-sink-ALC892 Digital] alsa-sink.c: Trying resume... ( 20.143| 0.000) I: [alsa-sink-ALC892 Digital] alsa-util.c: Trying to disable ALSA period wakeups, using timers only ( 20.143| 0.000) D: [alsa-sink-ALC892 Digital] alsa-util.c: Maximum hw buffer size is 11888 ms ( 20.143| 0.000) D: [alsa-sink-ALC892 Digital] alsa-util.c: Set buffer size first (to 88192 samples), period size second (to 44096 samples). ( 20.143| 0.000) I: [alsa-sink-ALC892 Digital] alsa-util.c: ALSA period wakeups disabled ( 20.143| 0.000) D: [alsa-sink-ALC892 Digital] alsa-sink.c: hwbuf_unused=0 ( 20.143| 0.000) D: [alsa-sink-ALC892 Digital] alsa-sink.c: setting avail_min=87310 ( 20.143| 0.000) I: [alsa-sink-ALC892 Digital] alsa-sink.c: Time scheduling watermark is 20.00ms ( 20.143| 0.000) I: [alsa-sink-ALC892 Digital] alsa-sink.c: Resumed successfully... ( 20.143| 0.000) D: [pulseaudio] module-suspend-on-idle.c: Sink alsa_output.pci-0000_00_14.2.iec958-stereo becomes idle, timeout in 5 seconds. ( 20.143| 0.000) I: [alsa-sink-ALC892 Digital] alsa-sink.c: Starting playback. ( 20.143| 0.000) D: [alsa-sink-ALC892 Digital] ratelimit.c: 612 events suppressed ( 20.143| 0.000) D: [alsa-sink-ALC892 Digital] alsa-sink.c: Cutting sleep time for the initial iterations by half. ( 20.143| 0.000) D: [alsa-sink-ALC892 Digital] alsa-sink.c: Cutting sleep time for the initial iterations by half. ( 20.143| 0.000) D: [pulseaudio] module-suspend-on-idle.c: Sink alsa_output.pci-0000_00_14.2.iec958-stereo becomes idle, timeout in 5 seconds. ( 20.143| 0.000) D: [pulseaudio] memblockq.c: memblockq requested: maxlength=33554432, tlength=0, base=4, prebuf=0, minreq=1 maxrewind=0 ( 20.143| 0.000) D: [pulseaudio] memblockq.c: memblockq sanitized: maxlength=33554432, tlength=33554432, base=4, prebuf=0, minreq=4 maxrewind=0 ( 20.143| 0.000) I: [pulseaudio] sink-input.c: Created input 0 "bell-window-system" on alsa_output.pci-0000_00_14.2.iec958-stereo with sample spec s16le 2ch 44100Hz and channel map front-left,front-right ( 20.143| 0.000) I: [pulseaudio] sink-input.c: media.name = "bell-window-system" ( 20.143| 0.000) I: [pulseaudio] sink-input.c: event.id = "bell-window-system" ( 20.143| 0.000) I: [pulseaudio] sink-input.c: media.role = "event" ( 20.143| 0.000) I: [pulseaudio] sink-input.c: application.process.id = "3056" ( 20.143| 0.000) I: [pulseaudio] sink-input.c: application.name = "gnome-terminal-server" ( 20.143| 0.000) I: [pulseaudio] sink-input.c: event.description = "Klangereignis" ( 20.143| 0.000) I: [pulseaudio] sink-input.c: media.filename = "/usr/share//sounds/freedesktop/stereo/bell.oga" ( 20.143| 0.000) I: [pulseaudio] sink-input.c: native-protocol.peer = "UNIX socket client" ( 20.143| 0.000) I: [pulseaudio] sink-input.c: native-protocol.version = "32" ( 20.143| 0.000) I: [pulseaudio] sink-input.c: application.id = "org.gnome.Shell" ( 20.143| 0.000) I: [pulseaudio] sink-input.c: application.icon_name = "start-here" ( 20.143| 0.000) I: [pulseaudio] sink-input.c: application.language = "de_DE.UTF-8" ( 20.143| 0.000) I: [pulseaudio] sink-input.c: window.x11.screen = "0" ( 20.143| 0.000) I: [pulseaudio] sink-input.c: window.x11.display = ":0" ( 20.143| 0.000) I: [pulseaudio] sink-input.c: application.process.user = "" ( 20.143| 0.000) I: [pulseaudio] sink-input.c: application.process.host = "" ( 20.143| 0.000) I: [pulseaudio] sink-input.c: application.process.binary = "gnome-shell" ( 20.143| 0.000) I: [pulseaudio] sink-input.c: application.process.machine_id = "ea36cd1203114403a03e683d7a3e7d3b" ( 20.143| 0.000) I: [pulseaudio] sink-input.c: application.process.session_id = "2" ( 20.143| 0.000) I: [pulseaudio] sink-input.c: window.x11.xid = "18875453" ( 20.143| 0.000) I: [pulseaudio] sink-input.c: window.name = "@: ~" ( 20.143| 0.000) I: [pulseaudio] sink-input.c: module-stream-restore.id = "sink-input-by-media-role:event" ( 20.144| 0.000) D: [pulseaudio] core-util.c: posix_madvise() worked fine! ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] alsa-sink.c: Cutting sleep time for the initial iterations by half. ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] alsa-sink.c: Requested to rewind 352768 bytes. ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] alsa-sink.c: Limited to 352456 bytes. ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] alsa-sink.c: before: 88114 ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] alsa-sink.c: after: 88114 ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] alsa-sink.c: Rewound 352456 bytes. ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] sink.c: Processing rewind... ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] source.c: Processing rewind... ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] sink.c: alsa_output.pci-0000_00_14.2.iec958-stereo: Found underrun 327920 bytes ago (24840 bytes ahead in playback buffer) ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] sink.c: alsa_output.pci-0000_00_14.2.iec958-stereo: Found underrun 327920 bytes ago (24836 bytes ahead in playback buffer) ( 20.144| 0.000) D: [pulseaudio] core-subscribe.c: Dropped redundant event due to change event. ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] sink.c: alsa_output.pci-0000_00_14.2.iec958-stereo: Found underrun 327920 bytes ago (24808 bytes ahead in playback buffer) ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] sink.c: alsa_output.pci-0000_00_14.2.iec958-stereo: Found underrun 327920 bytes ago (24804 bytes ahead in playback buffer) ( 20.144| 0.000) D: [pulseaudio] sink.c: The mute of sink alsa_output.pci-0000_00_14.2.iec958-stereo changed from yes to no. ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] sink.c: alsa_output.pci-0000_00_14.2.iec958-stereo: Found underrun 327920 bytes ago (24800 bytes ahead in playback buffer) ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] alsa-sink.c: Requested to rewind 352768 bytes. ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] alsa-sink.c: Limited to 352460 bytes. ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] alsa-sink.c: before: 88115 ( 20.144| 0.000) I: [pulseaudio] module-device-restore.c: Storing volume/mute for device+port sink:alsa_output.pci-0000_00_14.2.iec958-stereo:iec958-stereo-output. ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] alsa-sink.c: after: 88115 ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] alsa-sink.c: Rewound 352460 bytes. ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] sink.c: Processing rewind... ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] sink-input.c: Have to rewind 352460 bytes on render memblockq. ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] source.c: Processing rewind... ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] sink.c: alsa_output.pci-0000_00_14.2.iec958-stereo: Found underrun 327984 bytes ago (24772 bytes ahead in playback buffer) ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] sink.c: alsa_output.pci-0000_00_14.2.iec958-stereo: Found underrun 327984 bytes ago (24768 bytes ahead in playback buffer) ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] sink.c: alsa_output.pci-0000_00_14.2.iec958-stereo: Found underrun 327984 bytes ago (24764 bytes ahead in playback buffer) ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] sink.c: alsa_output.pci-0000_00_14.2.iec958-stereo: Found underrun 327984 bytes ago (24760 bytes ahead in playback buffer) ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] sink.c: alsa_output.pci-0000_00_14.2.iec958-stereo: Found underrun 327984 bytes ago (24760 bytes ahead in playback buffer) ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] sink.c: alsa_output.pci-0000_00_14.2.iec958-stereo: Found underrun 327984 bytes ago (24756 bytes ahead in playback buffer) ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] sink.c: alsa_output.pci-0000_00_14.2.iec958-stereo: Found underrun 327984 bytes ago (24752 bytes ahead in playback buffer) ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] sink.c: alsa_output.pci-0000_00_14.2.iec958-stereo: Found underrun 327984 bytes ago (24748 bytes ahead in playback buffer) ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] sink.c: alsa_output.pci-0000_00_14.2.iec958-stereo: Found underrun 327984 bytes ago (24744 bytes ahead in playback buffer) ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] sink.c: alsa_output.pci-0000_00_14.2.iec958-stereo: Found underrun 327984 bytes ago (24740 bytes ahead in playback buffer) ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] sink.c: alsa_output.pci-0000_00_14.2.iec958-stereo: Found underrun 327984 bytes ago (24736 bytes ahead in playback buffer) ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] sink.c: alsa_output.pci-0000_00_14.2.iec958-stereo: Found underrun 327984 bytes ago (24736 bytes ahead in playback buffer) ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] sink.c: alsa_output.pci-0000_00_14.2.iec958-stereo: Found underrun 327984 bytes ago (24732 bytes ahead in playback buffer) ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] sink.c: alsa_output.pci-0000_00_14.2.iec958-stereo: Found underrun 327984 bytes ago (24732 bytes ahead in playback buffer) ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] sink.c: alsa_output.pci-0000_00_14.2.iec958-stereo: Found underrun 327984 bytes ago (24728 bytes ahead in playback buffer) ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] sink.c: alsa_output.pci-0000_00_14.2.iec958-stereo: Found underrun 327984 bytes ago (24728 bytes ahead in playback buffer) ( 20.144| 0.000) D: [alsa-sink-ALC892 Digital] sink.c: alsa_output.pci-0000_00_14.2.iec958-stereo: Found underrun 327984 bytes ago (24724 bytes ahead in playback buffer) ( 20.146| 0.001) D: [alsa-sink-ALC892 Digital] sink.c: alsa_output.pci-0000_00_14.2.iec958-stereo: Found underrun 327984 bytes ago (24496 bytes ahead in playback buffer) ( 20.146| 0.000) D: [alsa-sink-ALC892 Digital] sink.c: alsa_output.pci-0000_00_14.2.iec958-stereo: Found underrun 327984 bytes ago (24488 bytes ahead in playback buffer) ( 20.146| 0.000) D: [alsa-sink-ALC892 Digital] sink.c: alsa_output.pci-0000_00_14.2.iec958-stereo: Found underrun 327984 bytes ago (24484 bytes ahead in playback buffer) ( 20.146| 0.000) D: [alsa-sink-ALC892 Digital] sink.c: alsa_output.pci-0000_00_14.2.iec958-stereo: Found underrun 327984 bytes ago (24480 bytes ahead in playback buffer) ( 20.729| 0.583) I: [pulseaudio] module-device-restore.c: Synced.