In the course of investigating problems with sound, i've come to see there is no sound service under /etc/init.d/ . There was alsasound which used to turn sound off and on, but that was not on, and I have great stereo sound through the soundcard, and turning it start and stop seemed to do nothing practical.
lsmod still shows the sound modules on
flatbush:[ruben]:~$ sudo lsmod|grep snd snd_usb_audio 552960 0 snd_usbmidi_lib 49152 1 snd_usb_audio snd_ump 40960 1 snd_usb_audio snd_rawmidi 53248 2 snd_usbmidi_lib,snd_ump snd_seq_device 16384 2 snd_ump,snd_rawmidi mc 90112 5 videodev,snd_usb_audio,videobuf2_v4l2,uvcvideo,videobuf2_common snd_hda_codec_hdmi 98304 1 snd_ctl_led 28672 0 snd_hda_codec_realtek 221184 1 snd_hda_codec_generic 114688 1 snd_hda_codec_realtek snd_soc_avs 237568 0 snd_hda_scodec_component 20480 1 snd_hda_codec_realtek snd_soc_hda_codec 28672 1 snd_soc_avs snd_hda_ext_core 36864 2 snd_soc_avs,snd_soc_hda_codec snd_soc_core 450560 2 snd_soc_avs,snd_soc_hda_codec snd_compress 28672 2 snd_soc_avs,snd_soc_core ac97_bus 12288 1 snd_soc_core snd_pcm_dmaengine 16384 1 snd_soc_core snd_hda_intel 69632 5 snd_intel_dspcfg 40960 2 snd_soc_avs,snd_hda_intel snd_intel_sdw_acpi 16384 1 snd_intel_dspcfg snd_hda_codec 217088 6 snd_hda_codec_generic,snd_soc_avs,snd_hda_codec_hdmi,snd_soc_hda_codec,snd_hda_intel,snd_hda_codec_realtek snd_hda_core 143360 8 snd_hda_codec_generic,snd_soc_avs,snd_hda_codec_hdmi,snd_soc_hda_codec,snd_hda_intel,snd_hda_ext_core,snd_hda_codec,sd_hda_codec_realtek snd_hwdep 20480 2 snd_usb_audio,snd_hda_codec snd_pcm 200704 11 snd_soc_avs,snd_hda_codec_hdmi,snd_hda_intel,snd_usb_audio,snd_hda_codec,snd_compress,snd_soc_core,snd_hda_core,snd_cm_dmaengine snd_timer 57344 3 snd_pcm snd 155648 22 snd_ctl_led,snd_hda_codec_generic,snd_seq_device,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_usb_audio,snd_usbmid_lib,snd_hda_codec,snd_hda_codec_realtek,snd_timer,snd_compress,snd_soc_core,snd_ump,snd_pcm,snd_rawmidi soundcore 16384 2 snd_ctl_led,snd