[AudioI] Failure To Initialize on Pi4 Kernel 5.10.63-v7l+

[David Klann]

Well, the closest I can get where the panic does not occur is kernel version 4.19.97-v7+ (distributed with RaspberryPiOS dated 2020-02-05).

After further testing, I'm not absolutely certain that the kernel panic is the event that prevents the auto-started services from starting. I'm continuing my testing ...

I appreciate your help in working through this issue!

  ~David

‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐

On Friday, November 19th, 2021 at 18:11, Matt Flax <matt at audioinjector.net> wrote:

> Ok,
>
> Some sort of kernel panic. I have observed this before with the Pi. Am I
>
> correct that the system still boots and seems to work, you can use alsa
>
> mixer and things like that with the sound card ?
>
> While I understand that it is posing problems with auto starting other
>
> software, is that correct ?
>
> I believe that this problem is to do with the ALSA core drivers, not
>
> necessarily anything to do with Audio Injector sound cards - however I
>
> reserve the right to be incorrect !
>
> There have been no major changes in the mainline Linux kernel for the
>
> codec driver and even fewer on the Pi's Linux kernel tree. Here are the
>
> mainline commits :
>
> https://github.com/torvalds/linux/commits/master/sound/soc/codecs/wm8731.c
>
> I think the AI drivers are working ok.
>
> Can you trace which version change in Linux brought on these errors ?
>
> Matt
>
> On 20/11/21 10:59 am, David Klann wrote:
>
> > On 11/19/21 17:32, Matt Flax via People wrote:
> >
> > > Hi there,
> > >
> > > This is the primary location for help.
> > >
> > > Can you please explain the trouble you are having ?
> >
> > Hello! Thanks for responding!
> >
> > I have been keeping RaspberryPiOS updated on several Pi4 computers.
> >
> > They've been dependable and sound great! I think a recent kernel
> >
> > update started causing problems as shown in the output at
> >
> > https://gist.github.com/dklann/dcfcab61fd733b83c5f50d9af4b1e1c9
> >
> > (AudioInjector Stereo) and
> >
> > https://gist.github.com/dklann/50710d7e05448856e4984490220de0a0
> >
> > (AudioInjector Zero).
> >
> > The cards seem to work once fully booted, but the errors shown at
> >
> > those two links are (I think) preventing other dependent applications
> >
> > from starting automatically as they used to.
> >
> > Maybe this is user error? If so, I could use some help in tracking it
> >
> > down.
> >
> > Please let me know if you need more information and if there is
> >
> > something more I can do to help troubleshoot.
> >
> > Thanks!
> >
> >   ~David
> >
> > > On 19/11/21 12:47 am, David Klann via People wrote:
> > >
> > > > Hey All,
> > > >
> > > > Matt, I've come across a repeatable issue with the most recent
> > > >
> > > > kernel on
> > > >
> > > > Raspberry Pi 4 running with both the Zero and the Stereo cards. I've
> > > >
> > > > created a GitHub issue (#76) with the same title as the subject of this
> > > >
> > > > message.
> > > >
> > > > Please let me know how I can help further troubleshoot.
> > > >
> > > > Thanks!
> > > >
> > > > ~David Klann
> > >
> > > --
> > >
> > > Checkout the community email list :
> > >
> > > https://lists.audioinjector.net/mailman/listinfo/people
>
> --
>
> Checkout the community email list :
>
> https://lists.audioinjector.net/mailman/listinfo/people
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