Kernel 6.7 Audio issues (Unrelated to the post below)

evorster · 2024-01-22 02:51:13

I have a Realtek ALC 1220 sound card, and an nvidia HDMI output.

To get the Realtek card to produce sound from the laptop speakers, I had to add the following line to /etc/modprobe.d/alsa-base.conf
```
options snd-hda-intel model=clevo-p950
```

This all worked fine until the update to kernel 6.7.0, when the Realtek card stopped producing sound from the laptop speakers.
Sound works over bluetooth speakers and headphones, and it even displays that sound is being output, but actually there is nothing, just like when that model=clevo-950 fix was put into place.

If I downgrade my system to before the 6.7.0 kernel update, sound works through the speakers again.

I have captured a dmesge log and an alsa-info.sh log from a working config and a broken config. Is there a way of attaching these rather lengthy files without pasting all the text into this box?

The only difference I can see between the working and non-working configuration is that
on the working configuration Card 0 is Realtek and Card 1 is nVidia, and on the non-working config the Card 0 is nVidia and Card 1 is Realtek.

Any clues as to where I should be looking or reporting this to would be highly appreciated, as well as any tips to try to get audio output from my laptop speakers again with kernel 6.7

Cbhihe · 2024-01-22 08:19:00

evorster wrote:

...
I have captured a dmesge log and an alsa-info.sh log from a working config and a broken config. Is there a way of attaching these rather lengthy files without pasting all the text into this box?
...

sudo dmesg | curl --upload-file - "http://paste.c-net.org/"

This will spew out a link that you can post here.

Last edited by Cbhihe (2024-01-22 08:19:59)

evorster · 2024-01-22 10:33:15

@Cbhihe, thanks for the info.

Without much further ado:

Dmesg output with kernel 6.6.10 and working speakers:
http://paste.c-net.org/FlameHeavier

alsa-info.sh output with working speakers:
http://paste.c-net.org/SolarisDorian

When I update to kernel 6.7.0, the speakers stop working.
Here is the output of dmesg:
http://paste.c-net.org/AskinShall

and, lastly, the output of alsa-info.sh:
http://paste.c-net.org/GracesBeard

As mentioned before, any help in where to go with this next would be greatly appreciated.

V1del · 2024-01-22 14:22:34

I'd first check whether it's a wireplumber state hiccup, remove ~/.local/state/wireplumber and restart wireplumber

systemctl --user restart wireplumber pipewire pipewire-pulse

If that worked, then hooray.

Maybe you also don't need the module line anymore because detection/setup got fixed. You could test without.

Otherwise the model clevo line like that will only be properly applied when the card is indeed 0. Unfortunately snd-hda-intel has no module parameter based mechanism to ensure a certain model definition is loaded based on clear identifiers just with the parameters. you'd have to identify the codec it uses by default and then supply a patch file adjusting the loaded model: https://docs.kernel.org/sound/hd-audio/ … y-patching -- the codec info file to get the vid/pid from is visible under /proc/asound/card*/codec#*

Last edited by V1del (2024-01-22 14:23:30)

evorster · 2024-01-23 00:22:20

Thanks for the reply, and things to test. It certainly has been a bit of a journey.

I tried the wireplumber thing, and no improvement.
I tried without the clevo-950 fixes, and still no improvement, both with the Realtek card as card0 and as card1

After a bit of scratching around, I can get the Realtek card to stay card0, AND have the clevo-p950 codec with this line in the modprobe:

options snd-hda-intel index=1,0 model=clevo-p950

Unfortunately there is still no sound from the speakers on this laptop, so I am back to being stumped.
When I compare what is being detected with the working sound and now, I can see that the IRQ for the Realtek card has changed.
Working config, kernel 6.6.10:

!!Soundcards recognised by ALSA
!!-----------------------------

 0 [PCH            ]: HDA-Intel - HDA Intel PCH
                      HDA Intel PCH at 0x6203130000 irq 198
 1 [NVidia         ]: HDA-Intel - HDA NVidia
                      HDA NVidia at 0x74000000 irq 17

Broken sound, kernel 6.7.0:

!!Soundcards recognised by ALSA
!!-----------------------------

 0 [PCH            ]: HDA-Intel - HDA Intel PCH
                      HDA Intel PCH at 0x6203130000 irq 197
 1 [NVidia         ]: HDA-Intel - HDA NVidia
                      HDA NVidia at 0x74000000 irq 17

Would a change in the IRQ make a difference ?

Last edited by evorster (2024-01-23 00:24:29)

V1del · 2024-01-23 00:58:45

The index option is a lie, it still going to be random and the clevo line potentially not applied to the correct device. Or rather if you wanted to resolve that logically correctly assuming it works 100% of time

options snd-hda-intel index=1,0 model=auto,clevo-p950

so you account for all devices appropriately.

evorster · 2024-01-23 19:11:27

Hmm, I had to swap auto and clevo-p950 to get them to not knock out the sound cards completely.
This is what the modprobe line looks like for me:
options snd-hda-intel index=1,0 model=clevo-p950,auto

Unfortunately, that does not solve the no sound from the speakers issue.
I filed a bug with the kernel:
https://bugzilla.kernel.org/show_bug.cgi?id=218409

Interestingly enough, when I revert to kernel 6.6.10 without modifying this line, my sound works properly, but now the cards are in a reversed order from kernel 6.7
Just have to note, my sound works in all cases in kernel 6.6.10, unless I remove clevo-p950 from modprobe, and then the symptoms are identical to what I am seeing now with it in on kernel 6.7.0

Arch Linux

#1 2024-01-22 02:51:13

Kernel 6.7 Audio issues (Unrelated to the post below)

#2 2024-01-22 08:19:00

Re: Kernel 6.7 Audio issues (Unrelated to the post below)

#3 2024-01-22 10:33:15

Re: Kernel 6.7 Audio issues (Unrelated to the post below)

#4 2024-01-22 14:22:34

Re: Kernel 6.7 Audio issues (Unrelated to the post below)

#5 2024-01-23 00:22:20

Re: Kernel 6.7 Audio issues (Unrelated to the post below)

#6 2024-01-23 00:58:45

Re: Kernel 6.7 Audio issues (Unrelated to the post below)

#7 2024-01-23 19:11:27

Re: Kernel 6.7 Audio issues (Unrelated to the post below)

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