Ubuntu 20.04: No sound

[Volker Wysk]

Am Mittwoch, den 20.05.2020, 12:32 +0200 schrieb Oliver Grawert:
> hi,
> Am Mittwoch, den 20.05.2020, 12:02 +0200 schrieb Volker Wysk:
> >  
> > But I've found something in /var/log/dmesg:
> > 
> > [   26.390570] snd_hda_intel 0000:00:1b.0: dmic_detect option is
> > deprecated, pass snd-intel-dspcfg.dsp_driver=1 option instead
> > [   26.391184] snd_hda_intel 0000:01:00.1: dmic_detect option is
> > deprecated, pass snd-intel-dspcfg.dsp_driver=1 option instead
> > [   26.391335] snd_hda_intel 0000:01:00.1: Handle vga_switcheroo
> > audio
> > client
> > [   26.394283] snd_hda_intel 0000:00:1b.0: no codecs found!
> > [   26.424828] input: HDA ATI HDMI HDMI/DP,pcm=3 as
> > /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input19
> > 
> > Especially the fourth line seams suspicious.
> > 
> according to 
> https://wiki.ubuntuusers.de/Soundkarten_konfigurieren/HDA/
> 
> the snd-hda-intel driver knows an option "model=vaio" ...
> try using:
> 
> options snd-hda-intel model=vaio
> 
> in your /etc/modprobe.d/ adjustments instead of model=generic ... 

I've studied this page. Two times, "vaio" is mentioned. I've tried
various entries in /etc/modprobe.d/alsa-base.conf and /etc/modules.
Without success.

That Ubuntu Users article (see above) states that there should be
something in /proc/asound/card0, but that isn't the case. It's an empty
directory. It's different in /proc/asound/card1, there is something (is
this that "dummy output"?). It looks like some codec is missing. The
/var/log/dmesg-messages also say there is a codec missig:

[   17.480675] snd_hda_intel 0000:00:1b.0: no codecs found!

> if you look at
> https://www.kernel.org/doc/html/latest/sound/hd-audio/models.html
> 
> there seem to be a few more vaio and sony related models you could
> try
> ...


Bye,
Volker