------------------ Original ------------------
Date: Mon, Nov 20, 2023 11:10 AM
To: "pulseaudio-discuss"<pulseaudio-discuss@xxxxxxxxxxxxxxxxxxxxx>;
Subject: Re: [pulseaudio-discuss] Switching output ports across sound cards will cause the Headphone to be silent.
> > (Tips: USB speakers or Bluetooth earphones use independent sound cards, and the device uses an onboard sound card.)
> >
> >
> > 1. headphone is unplugged, automatically change port: headphone -> speaker-> usb speaker (or Bluetooth earphone)
> > 2. headphone is plugged, automatically change port: usb speaker(or Bluetooth earphone) -> headphone
> >
> >
> > Step 1. When the headphone is unplugged, the port is automatically switched from the headphone to the speaker.
> > The following configuration items in the analog-output-speaker.conf file will be applied, and then the port is
> > switched to the USB speaker.
> > Close Headphone volume
> > [Element Headphone]
> > switch=off
> > volume=off
> >
> >
> > Step 2, when the headphone is plugged in, the port is automatically switched from the USB speaker to the headphone,
> > and the following configuration items in the analog-output-headphone.conf file will be applied.
> > [Element Headphone]
> > required-any = any
> > switch = mute
> > volume=merge
> > override-map.1 = all
> > override-map.2 = all-left,all-right
> >
> >
> > As you can see through alsamixer, the volume of the Headphone has been restored, but the Headphone is silent.
> >
> >
> >
> > Could you please help slove this issue, thanks!
>
> Hi, Chengyi.
>
> Your question is somewhat unclear. The behavior you're describing is not
> how pulseaudio operates by default, but the config file snippets you
> provide are not modified from the defaults. By default, unplugging the
> headphones should switch to the speaker channel of the same ALSA card.
> Have you made any modifications to the various pulseaudo alsa-mixer
> paths conf files? If so, please show what you have changed.
>
Hi Sean,
Thanks for your reply.
Yes, at first, unplugging theheadphones should switch to the speaker channel of
Yes, at first, unplugging theheadphones should switch to the speaker channel of
the same ALSA card, but then the client sends "command_set_default_sink_or_source"
to switth to USB Speaker, so the following switching sequence occurs.
headphone -> speaker-> usb speaker (or Bluetooth earphone)
Part of the log is as follows:
----------------------------------
11月 20 13:40:10.686234 uos60-PC pulseaudio[8944]: I: [pulseaudio] sink.c: Changed port of sink 1 "alsa_output.pci-0000_00_1f.3.analog-stereo" to analog-output-speaker
11月 20 13:40:10.686234 uos60-PC pulseaudio[8944]: I: [pulseaudio] core.c: default_sink: alsa_output.usb-C-Media_Electronics_Inc._USB_PnP_Sound_Device-00.analog-stereo -> alsa_output.pci-0000_00_1f.3.analog-stereo
...
11月 20 13:40:10.689190 uos60-PC pulseaudio[8944]: I: [pulseaudio] core.c: configured_default_sink: alsa_output.pci-0000_00_1f.3.analog-stereo -> alsa_output.usb-C-Media_Electronics_Inc._USB_PnP_Sound_Device-00.analog-stereo
11月 20 13:40:10.689190 uos60-PC pulseaudio[8944]: I: [pulseaudio] core.c: default_sink: alsa_output.pci-0000_00_1f.3.analog-stereo -> alsa_output.usb-C-Media_Electronics_Inc._USB_PnP_Sound_Device-00.analog-stereo
BR,
Chengyi
