Date: Thu, 11 Dec 2025 14:23:26 -0500 (EST) From: "Sean C. Farley" <scf@FreeBSD.org> To: Christos Margiolis <christos@FreeBSD.org> Cc: freebsd-multimedia@FreeBSD.org Subject: Re: Muting only affects audio that is playing Message-ID: <598a46dd-3abc-2a72-3f58-a9ca16ab3bb0@FreeBSD.org> In-Reply-To: <DEUKE1MYMQJY.JDSTZX83BW19@FreeBSD.org> References: <8028333b-f7c1-7992-1016-4194623fce38@FreeBSD.org> <DEUKE1MYMQJY.JDSTZX83BW19@FreeBSD.org>
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On Wed, 10 Dec 2025, Christos Margiolis wrote: > Hello Sean, > > On Wed Dec 10, 2025 at 4:56 AM CET, Sean C. Farley wrote: >> When I mute the mixer, it will mute any program currently playing >> audio to the device. That is as expected. >> >> However, this does not prevent audio from being played in other >> conditions: >> - Restarting mpv. >> - Pausing then unpausing mpv. >> - Playing something in Firefox then skipping into the video. Pausing >> and unpausing seems to work with Firefox. >> >> I wish I could recall better, but I think it used to work at least >> prior to switching from the motherboard sound to a dedicated sound >> card. >> >> Mute should stick, yes? I have also tried pcm.mute=on, but it does >> not change anything. > > I do not run 14.3-STABLE anymore, but I am pretty sure this wasn't an > issue back then, and definitely doesn't seem to be a problem in > 15.0-RELEASE. At least I do not recall anyone else having reported > such an issue. > > Can you by any chance try with 15.0 and let me know if the issue > persists? I am not sure if that could be a sound card-specific issue, > as the muting functionality is done on the sound(4) layer, but if your > issue persists we'll have to dig investigate this scenario as well. > > If you cannot try 15.0, can you at least recompile sound (or your > kernel if sound is compiled into the kernel) and re-test? Hi Christos, First, I tested with 14.3-STABLE: stable/14-n272977-63b77ab1554e I now tried with 15.0-STABLE: stable/15-n281468-224d65015465 Muting still does not work correctly even after removing any sound related settings from /boot/loader.conf and /etc/sysctl.conf just to make sure they were not doing anything. With hw.snd.verbose=4, I played an MP3 with mpv while the sound was muted. Here is the information, although, I am not sure if it helps. sndbuf_remalloc(): b=0xfffff80106608a80 8192 [8192] NOCHANGE pcm4: chn_resizebuf(): PCMDIR_PLAY (hardware) timeout=10 b[2048/1024/2] bs[2048/1024/2] limit=0 sndbuf_remalloc(): b=0xfffff8014cdfd180 0 -> 8192 [8192] pcm4: chn_resizebuf(): PCMDIR_PLAY (virtual) timeout=10 b[0/0/0] bs[8192/1024/8] limit=2048 pcm4: chn_resizebuf(): PCMDIR_PLAY (hardware) timeout=10 b[2048/1024/2] bs[2048/1024/2] limit=0 pcm4: chn_resizebuf(): PCMDIR_PLAY (virtual) timeout=10 b[0/0/0] bs[8192/1024/8] limit=2048 pcm4: chn_resizebuf(): PCMDIR_PLAY (hardware) timeout=10 b[2048/1024/2] bs[2048/1024/2] limit=0 sndbuf_remalloc(): b=0xfffff8014cdfd180 8192 -> 16384 [16384] pcm4: chn_resizebuf(): PCMDIR_PLAY (virtual) timeout=10 b[0/0/0] bs[16384/2048/8] limit=4096 pcm4: chn_resizebuf(): PCMDIR_PLAY (hardware) timeout=10 b[2048/1024/2] bs[2048/1024/2] limit=0 pcm4: chn_resizebuf(): PCMDIR_PLAY (virtual) timeout=10 b[0/0/0] bs[16384/2048/8] limit=3763 pcm4: chn_trigger() dsp4.virtual_play.0: calling go=0x00000001 , prev=0x00000000 pcm4: chn_start(): VCHAN PARENT starting! (PCMDIR_PLAY/running) (ready=2048 force=1 i=1 j=0 intrtimeout=10 latency=10ms) pcm4: chn_trigger() dsp4.play.0: calling go=0x00000001 , prev=0xffffffff hdac1: 1536Kbps of 46080Kbps bandwidth used pcm4: PCMDIR_PLAY: Stream setup fmt=00200010 (2.0) speed=48000 pcm4: PCMDIR_PLAY: Stream setup nid=2: fmt=0x0011, dfmt=0x0001, chan=0x0010, chan_count=0x01, stripe=0 pcm4: chn_trigger() dsp4.virtual_play.0: calling go=0xffffffff , prev=0x00000001 pcm4: chn_trigger() dsp4.play.0: calling go=0xffffffff , prev=0x00000001 pcm4: chn_resizebuf(): PCMDIR_PLAY (hardware) timeout=10 b[2048/1024/2] bs[2048/1024/2] limit=0 pcm4: chn_resizebuf(): PCMDIR_PLAY (virtual) timeout=10 b[0/0/0] bs[16384/2048/8] limit=3763 sndbuf_remalloc(): b=0xfffff80106608a80 8192 [2048] NOCHANGE pcm4: chn_resizebuf(): PCMDIR_PLAY (hardware) timeout=42 b[2048/1024/2] bs[8192/1024/8] limit=2048 One odd thing was that running "mixer vol.mute=off" while audio is playing actually muted the sound. However, pausing and unpausing got it to play anyway. Sean -- scf@FreeBSD.orghelp
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