[alsa-devel] No sound with Realtek ALC298 on a Samsung Galaxy book

[Takashi Iwai]

On Sat, 15 Feb 2020 17:56:58 +0100,
Aurélien Croc wrote:
> 
> Dear ALSA community, 
> 
> I just bought a Samsung Galaxy book 12" laptop and I installed the latest 
> Fedora version (31) on it. Unfortunately when I try to listen something there 
> is absolutely no sound from speaker nor headsets. I checked that volumes of 
> the different channels were max. I also checked for muting system but I didn't 
> found anything.
> Of course it works perfectly under Windows.
> I saw on internet that many ALC298 users had troubles with it. I tried 
> different options to the intel hda driver (especially the model one) but it 
> changes nothing.
> 
> Here is the alsa-info.sh output: http://alsa-project.org/db/?
> f=871881e295972b9ecf252b25e90d659e38d939b8
> I would appreciate some help in order to find a solution.
> Tell me if you need more information.
> Thanks in advance.

The BIOS seems broken, it just sets a single output pin.
You need to try to figure out the pin connections, e.g. via
hdajackretask program.  The headphone might work with that.
But the speaker output might need another special handling, and it's
nothing but trial-and-test with the existing quirks for similar
devices.  Take a look at sound/pci/hda/patch_realtek.c.


Takashi