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

[Matt Flax]

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
>>>
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