サウンドカードの動作に問題があります。これに関するいくつかの情報は次のとおりです。
ignatius@catch22bbs:~$ lsmod|grep snd
snd_seq_dummy 16384 0
snd_hrtimer 16384 1
snd_seq 90112 7 snd_seq_dummy
snd_usb_audio 376832 1
snd_usbmidi_lib 45056 1 snd_usb_audio
snd_rawmidi 53248 1 snd_usbmidi_lib
snd_seq_device 16384 2 snd_seq,snd_rawmidi
snd_sof_pci_intel_cnl 16384 0
snd_sof_intel_hda_common 188416 1 snd_sof_pci_intel_cnl
soundwire_intel 49152 1 snd_sof_intel_hda_common
snd_sof_intel_hda 20480 1 snd_sof_intel_hda_common
snd_sof_pci 24576 2 snd_sof_intel_hda_common,snd_sof_pci_intel_cnl
snd_sof_xtensa_dsp 16384 1 snd_sof_intel_hda_common
snd_sof 274432 2 snd_sof_pci,snd_sof_intel_hda_common
snd_sof_utils 20480 1 snd_sof
snd_soc_hdac_hda 24576 1 snd_sof_intel_hda_common
snd_hda_ext_core 40960 2 snd_sof_intel_hda_common,snd_soc_hdac_hda
snd_soc_acpi_intel_match 73728 2 snd_sof_intel_hda_common,snd_sof_pci_intel_cnl
snd_soc_acpi 16384 2 snd_soc_acpi_intel_match,snd_sof_intel_hda_common
snd_soc_core 348160 4 soundwire_intel,snd_sof,snd_sof_intel_hda_common,snd_soc_hdac_hda
snd_compress 28672 1 snd_soc_core
snd_hda_intel 57344 0
snd_intel_dspcfg 36864 3 snd_hda_intel,snd_sof,snd_sof_intel_hda_common
snd_intel_sdw_acpi 20480 2 snd_sof_intel_hda_common,snd_intel_dspcfg
snd_hda_codec 184320 3 snd_hda_intel,snd_soc_hdac_hda,snd_sof_intel_hda
snd_hda_core 122880 6 snd_hda_intel,snd_hda_ext_core,snd_hda_codec,snd_sof_intel_hda_common,snd_soc_hdac_hda,snd_sof_intel_hda
snd_hwdep 16384 2 snd_usb_audio,snd_hda_codec
snd_pcm 159744 10 snd_hda_intel,snd_usb_audio,snd_hda_codec,soundwire_intel,snd_sof,snd_sof_intel_hda_common,snd_compress,snd_soc_core,snd_sof_utils,snd_hda_core
snd_timer 49152 3 snd_seq,snd_hrtimer,snd_pcm
snd 126976 17 snd_seq,snd_seq_device,snd_hwdep,snd_hda_intel,snd_usb_audio,snd_usbmidi_lib,snd_hda_codec,snd_sof,snd_timer,snd_compress,snd_soc_core,snd_pcm,snd_rawmidi
soundcore 16384 1 snd
mc 77824 8 videodev,au8522_decoder,snd_usb_audio,videobuf2_v4l2,dvb_core,videobuf2_common,au0828,tuner
usbcore 344064 9 xhci_hcd,snd_usb_audio,usbhid,snd_usbmidi_lib,usb_storage,btusb,xhci_pci,uas,au0828
ignatius@catch22bbs:~$ cat /proc/asound/cards
0 [PCH ]: HDA-Intel - HDA Intel PCH
HDA Intel PCH at 0xb1348000 irq 168
1 [HVR850 ]: USB-Audio - HVR-850
Hauppauge HVR-850 at usb-0000:00:14.0-8, high speed
ignatius@catch22bbs:~$ lspci -v | grep -i audio
00:1f.3 Audio device: Intel Corporation Comet Lake PCH-V cAVS
ignatius@catch22bbs:~$ inxi -Aa
Audio:
Device-1: Intel Comet Lake PCH-V cAVS vendor: ASUSTeK driver: snd_hda_intel
v: kernel bus-ID: 1-8:4 chip-ID: 2040:7240 alternate: snd_sof_pci_intel_cnl
bus-ID: 00:1f.3 class-ID: 0102 chip-ID: 8086:a3f0 serial: 4034577942
class-ID: 0403
Device-2: Hauppauge WinTV HVR-850 type: USB driver: au0828,snd-usb-audio
Sound API: ALSA v: k6.1.0-5-amd64 running: yes
Sound Server-1: PulseAudio v: 16.1 running: no
Sound Server-2: PipeWire v: 0.3.65 running: yes
ありがとうございます。