------------------ Original ------------------ From: "Sean Greenslade"<s...@seangreenslade.com>; Date: Mon, Nov 20, 2023 11:10 AM To: "pulseaudio-discuss"<pulseaudio-discuss@lists.freedesktop.org>; Subject: Re: [pulseaudio-discuss] Switching output ports across sound cards will cause the Headphone to be silent.
> > In the following scenario, 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 -&gt; speaker-&gt; usb speaker (or Bluetooth earphone) > > 2. headphone is plugged, automatically change port: usb speaker(or Bluetooth earphone) -&gt; headphone > > > > > > Step 1. When the headphone is unplugged, the port is automatically switched from the headphone to the speaker.&nbsp; > > The following configuration items in the analog-output-speaker.conf file will be applied, and then the port is&nbsp; > > 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,&nbsp; > > 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 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
