#265 No sound with Intel Smart Sound Tecchnology (ISST) - Intel J4115

[Marco Bernardi]

first of all thank you for the attention. I already uploaded info about my configuration in the following link http://alsa-project.org/db/?f=10a60835f6027cf2e6eb06a319895739f2cccd34

The PC is a laptop, brand KUU model xbook, cpu Intel Celeron J4115, linux distribution is Kali, kernel is 5.10. (I have same issues with other distributions such as Ubuntu 20.4LTS, Debian Buster)

The issue is not related to pulseaudio but to ALSA as it does not show the integrated stereo output but just HDMI(and i have only 1 external HDMI). All HDMI show are "not connected"

I tried to pass grub "915.disable_power_well=0" added model=auto as option to snd_hda_intel in modprobe. Checking the information in the model list of hda i can't find the exact occurrence of my card. This should be the windows driver page https://drive.google.com/drive/folders/1c9DHiS8DEp3HSOzAvJ71bBrW-tgzyJsf (link from http://kuu-tech.com/page2.html). Even windows driver on windows 10 do not work with clean installation.

I'm open to any possible test/try.
Thanks again

EDIT1
After further testing, I believe that the audio is not directly connected, but comunicate with something like I2C or SPI.

[Frank Portegies]

Exactly the same problem here with Ubuntu 20.04. I hope that there will be a linux driver soon for the sound for J4115 chip. I want to follow the news about this, if anyone knows ,more let us know!
Reinstall of Windows with Kuu unattended installation (on USB stick) worked and gave me sound, But I screwed up the windows registration key that is stored and controlled in the bios.
Hardware vendors and Microsoft are working better together to prevent use of illegal windows versions.