Ubuntu 20.04: No sound

[Volker Wysk]

Am Dienstag, den 19.05.2020, 23:48 +0200 schrieb Liam Proven:
> On Tue, 19 May 2020 at 19:40, Volker Wysk <post at volker-wysk.de>
> wrote:
> > No, it's Linux only. I've never used Windows (except for a little
> > at
> > work). There isn't any firmware-update option in the BIOS. The BIOS
> > user interface is really small.
> 
> Sadly Windows is the native OS of PCs, and if you want to run PCs and
> do things like update your firmware, you need Windows sometimes.

I've made do without Windows, so far.

> > I could ask a friend. But, as has been noticed in this thread, it's
> > very unlikely that it's a BIOS issue.
> 
> Just use VirtualBox and a free ISO from microsoft.com.

I don't want to mess with the BIOS, if it can be avoided. Something
might break. And it doesn't seem to be a BIOS issue. In that web page,
which Liam found (
https://www.linuxuprising.com/2018/06/fix-no-sound-dummy-output-issue-in.html
), it says that it is a kernel problem. And it worked in Kubuntu 18.04.
I have only touched the boot sequence in the BIOS. 

> > Hmm.. I get a lot of for-me irrelevant stuff about that Vaio
> > "VPCEB1Z1E" of mine, even from Sony.
> 
> Google in English, and practice your skills. It took me seconds and
> it
> was on my first try. No black magic involved.

... Googling for "VPCEB1Z1E bios" reveals Sony's VPCEB1Z1E support
page. It's full of Window specific links, and doesn't contain the word
"bios" ...

> > That's the same article as the one which Ralf has found.
> 
> I found it. Ralf quoted me.

Okay.

> >  I've tried it,
> > but without success.
> 
> There were 2 different techniques in the link. You need to try both,
> and keep notes of what happened, what your machine said, and share
> them with us.

Yes, I've tried them both. Both techniques consist in adding something
to two files in /etc/modprobe.d, and then reboot. Nothing special
happens. 

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.

What also makes me wonder, is why it's "snd_hda_intel" in dmesg, but
"snd-hda-intel" in /etc/modprobe.d/alsa-base.conf...


Bye,
Volker