Bug 29705

Created attachment 13013 [details]
Last boot logs

Last Boot log attachment

you seem to be missing alsa-sof-firmware

Ok that's it!

I've installed alsa-sof-firmware and sound go back.

It wasn't installed on my system. 
Why?

And why if it wasn't installed before all worked fine with old kernel?

Avec l'installation de ce paquet j'ai un plantage de la carte son.
A près un moment d'utilisation j'ai un gros biiiiip. Je suis obligé d'arrêter la lecture en cours et de la relancer

(In reply to Guillaume Royer from comment #4)
> Avec l'installation de ce paquet j'ai un plantage de la carte son.
> A près un moment d'utilisation j'ai un gros biiiiip. Je suis obligé
> d'arrêter la lecture en cours et de la relancer

In English sorry wrong copy/past

With the installation of this package I have a sound card crash.
After a moment of use I have a big beep. 
I have to stop the playback in progress and restart it

(In reply to Guillaume Royer from comment #3)
> Ok that's it!
> 
> I've installed alsa-sof-firmware and sound go back.
> 
> It wasn't installed on my system. 
> Why?
> 
> And why if it wasn't installed before all worked fine with old kernel?

because older kernels did not support the sof drivers/firmwwares so it used the legacy drivers for sound...

unfortunately there is no easy way to detect the need for sof firmware, so I will probably add it as a recommends in next kernel build 


(In reply to Guillaume Royer from comment #5)

> 
> With the installation of this package I have a sound card crash.
> After a moment of use I have a big beep. 
> I have to stop the playback in progress and restart it


anything in the logs ?

also... I've just pushed: alsa-sof-firmware-1.9.2-1.mga8 to nonfree updates testing... 

please test if that one works better

So I understand why now with old kernel sound doesn't play well. (In reply to Thomas Backlund from comment #6)
> (In reply to Guillaume Royer from comment #3)
> > Ok that's it!
> > 
> > I've installed alsa-sof-firmware and sound go back.
> > 
> > It wasn't installed on my system. 
> > Why?
> > 
> > And why if it wasn't installed before all worked fine with old kernel?
> 
> because older kernels did not support the sof drivers/firmwwares so it used
> the legacy drivers for sound...
> 
> unfortunately there is no easy way to detect the need for sof firmware, so I
> will probably add it as a recommends in next kernel build 
> 
> 
> (In reply to Guillaume Royer from comment #5)
> 
> > 
> > With the installation of this package I have a sound card crash.
> > After a moment of use I have a big beep. 
> > I have to stop the playback in progress and restart it
> 
> 
> anything in the logs ?

So I understand why now with old kernel sound doesn't play well.

(In reply to Thomas Backlund from comment #7)
> also... I've just pushed: alsa-sof-firmware-1.9.2-1.mga8 to nonfree updates
> testing... 
> 
> please test if that one works better

I've been test and same results after a while sound cut off and it replace by biiiip

I attached journal if you want to see it

Created attachment 13014 [details]
Last logs

Command journalctl -b —no-hostname —no-pager | grep -v msec

I've seen this link

https://github.com/torvalds/linux/blob/master/sound/soc/intel/boards/bytcr_rt5640.com

If it can help, but I guess that you already know it

(In reply to Guillaume Royer from comment #10)
> I've seen this link
> 
> https://github.com/torvalds/linux/blob/master/sound/soc/intel/boards/
> bytcr_rt5640.com
> 
> If it can help, but I guess that you already know it

https://github.com/torvalds/linux/blob/master/sound/soc/intel/boards/bytcr_rt5640.c

Some new with my Asus T100A TA.

When I boot on old kernel 5.10 sound is the sound is slowed down and jerky.

So I tried to install two other Linux in triple boot: Linux Mint and Debian with respectively  Kernel 5.4 and 5.10.

If I start my computer on each one sound works correctly.
But If I start MGA in first, and reboot on Mint or Debian without shutdown computer the sound is slowed down and jerky too.

So I think that firmware modify micro-code in sound processor and it's stay present when I reboot whithout shut down. 
That make same behavoiur than MGA

That's big problem with firmware I think.

I found this resource if it can help: 

https://wiki.debian.org/InstallingDebianOn/Asus/T100TA