sound problem on Kubuntu 20.04

[Shlomo Solomon]

I feel really stupid, but after hours of searching, I'm really lost. No
idea what I'm missing. 

New computer - new install of Kubuntu 20.04 - no sound.

I thought it might be a hardware problem since it's a new computer, but
when I boot to a LiveDVD of the same distro, everything is fine.

When I connect a Bluetooth speaker, it's recognized and works.

kmix does not show any devices

alsamixer -c 0 shows:
    Card: HDA Intel PCH
    Chip: Realtek ALC887-VD

cat /proc/asound/modules
 0 snd_hda_intel

cat /proc/asound/devices
  1:        : sequencer
  2: [ 0- 0]: digital audio playback
  3: [ 0- 0]: digital audio capture
  4: [ 0- 3]: digital audio playback
  5: [ 0- 7]: digital audio playback
  6: [ 0- 8]: digital audio playback
  7: [ 0- 9]: digital audio playback
  8: [ 0-10]: digital audio playback
  9: [ 0- 0]: hardware dependent
 10: [ 0- 2]: hardware dependent
 11: [ 0]   : control
 33:        : timer

I don't see anything unusual in dmesg

[   16.769816] snd_hda_intel 0000:00:1f.3: enabling device (0000 ->
0002) [   16.769946] snd_hda_intel 0000:00:1f.3: Applying patch
firmware 'hda-jack-retask.fw' [   16.883625] snd_hda_intel
0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [
i915]) [   16.999730] snd_hda_codec_realtek hdaudioC0D0: autoconfig for
ALC887-VD: line_outs=1 (0x14/0x0/ 0x0/0x0/0x0) type:line
[   16.999731] snd_hda_codec_realtek hdaudioC0D0:    speaker_outs=0
(0x0/0x0/0x0/0x0/0x0) [   16.999731] snd_hda_codec_realtek hdaudioC0D0:
   hp_outs=1 (0x1b/0x0/0x0/0x0/0x0) [   16.999732]
snd_hda_codec_realtek hdaudioC0D0:    mono: mono_out=0x0 [   16.999732]
snd_hda_codec_realtek hdaudioC0D0:    inputs: [   16.999733]
snd_hda_codec_realtek hdaudioC0D0:      Line=0x1a [   17.033081] input:
HDA Intel PCH Line as
/devices/pci0000:00/0000:00:1f.3/sound/card0/input6 [   17.033107]
input: HDA Intel PCH Line Out as
/devices/pci0000:00/0000:00:1f.3/sound/card0/input 7 [   17.033133]
input: HDA Intel PCH Front Headphone as
/devices/pci0000:00/0000:00:1f.3/sound/card 0/input8 [   17.033156]
input: HDA Intel PCH HDMI/DP,pcm=3 as
/devices/pci0000:00/0000:00:1f.3/sound/card0/ input9 [   17.033177]
input: HDA Intel PCH HDMI/DP,pcm=7 as
/devices/pci0000:00/0000:00:1f.3/sound/card0/ input10 [   17.033197]
input: HDA Intel PCH HDMI/DP,pcm=8 as
/devices/pci0000:00/0000:00:1f.3/sound/card0/ input11 [   17.033217]
input: HDA Intel PCH HDMI/DP,pcm=9 as
/devices/pci0000:00/0000:00:1f.3/sound/card0/ input12 [   17.033238]
input: HDA Intel PCH HDMI/DP,pcm=10 as
/devices/pci0000:00/0000:00:1f.3/sound/card0 /input13


-- 
Shlomo Solomon
http://the-solomons.net
Claws Mail 3.17.5 - KDE Plasma 5.18.5 - Kubuntu 20.04