On Mon, Nov 20, 2023 at 03:03:41PM +0800, 赵成义 wrote: > > OK, so your custom client application is deliberately changing the > > default sink? Note that just changing the default sink will not move > > existing sink input streams. You will need to do that yourself, for > > example with the pa_context_move_sink_input_by_index function. > > > > Hi Sean, > > > In fact, the sink-input has been moved correctly. If the speaker port is closed, this problem will not occur. > > > > I think this is a kernel problem. At that time, the speaker was always on and switching between sound cards > > was performed when the headphone was plugged and unplugged. > > > > logs: > ----------- > > 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 > 11月 20 13:40:10.689623 uos60-PC pulseaudio[8944]: D: [pulseaudio] module-suspend-on-idle.c: Sink alsa_output.pci-0000_00_1f.3.analog-stereo becomes idle, timeout in 2 seconds. > 11月 20 13:40:10.689623 uos60-PC pulseaudio[8944]: D: [pulseaudio] sink-input.c: Starting to move sink input 0 from 'alsa_output.pci-0000_00_1f.3.analog-stereo' I'm unable to reproduce the behavior you are describing. I tried on several machines with both internal soundcards and a USB sound card attached, and I was able to move sink inputs between the two cards immediately after plugging in headphones with no issues. As a next step, you should try to determine where in the stack the issue is. Your logs don't have any smoking guns in them, so I would get your system into the problematic state while your audio source is running, then check everything starting at the source of the audio: - Audio player is actually playing media (e.g. not paused) - Pulse APIs are consuming audio samples (e.g. not stalled) - Pulse reports that the sink input is not corked, not muted, and set at a reasonable volume level - Pulse reports that the sink input is routed to the correct sink - Pulse reports that the sink is running, not muted, set to a reasonable volume, and has the correct active port - Alsamixer shows the device master channel as unmuted and at approximately the same volume that pulse reports - Alsamixer shows the intended port's channel at 100% volume and not muted --Sean
