Haswell audio no longer working with new Catpt driver

[Lars-Peter Clausen]

Hi,

I'm taking this conversation back to the mailinglist. Hope you don't mind.

On 12/31/20 2:15 PM, Christian Labisch wrote:
> Hi Amadeusz, Greg, and Lars-Peter,
>
> Do you have a suggestion for a workaround ?
> A special boot parameter that I could add ?
> Will the drivers work in the next version ?

I had a quick look at the changes to the HDA driver between v5.9 and 
v5.10. And there isn't that much, expect some changes to power management.

Curiously enough pretty much your only difference between your v5.9 and 
v5.10 alsa-info.sh is that a few of the nodes are in D3 state (meaning 
powered down) in v5.10. One of them is the internal speaker.

But this could also be a coincidence, would be interesting to see what 
the output of alsa-info.sh looks like when the you are trying to play 
some audio. If it is still powered down then there is a bug.

- Lars


>
> Regards,
> Christian
>
>
>> On Thu, 2020-12-31 at 12:20 +0100, Amadeusz Sławiński wrote:
>>> On 12/31/2020 11:50 AM, Christian Labisch wrote:
>>>> Hi Lars-Peter,
>>>>
>>>> Thank you, please find attached the requested information from both kernels.
>>>> I freshly installed the fedora kernel 5.10.4 to give you the latest results.
>>>>
>>>> Regards,
>>>> Christian
>>>>
>>>> Christian Labisch
>>>> Red Hat Accelerator
>>>> clnetbox.blogspot.com
>>>> access.redhat.com/community
>>>> access.redhat.com/accelerators
>>>>
>>>>
>>>> On Thu, 2020-12-31 at 11:04 +0100, Lars-Peter Clausen wrote:
>>>>> On 12/31/20 9:33 AM, Greg Kroah-Hartman wrote:
>>>>>> On Wed, Dec 30, 2020 at 07:10:16PM +0100, Christian Labisch wrote:
>>>>>>> Update :
>>>>>>>
>>>>>>> I've just tested the kernel 5.10.4 from ELRepo.
>>>>>>> Unfortunately nothing changed - still no sound.
>>>>>> Ah, sad.  Can you run 'git bisect' between 5.9 and 5.10 to determine the
>>>>>> commit that caused the problem?
>>>>> The problem is that one driver was replaced with another driver. git
>>>>> bisect wont really help to narrow down why the new driver does not work.
>>>>>
>>>>> Christian can you run the alsa-info.sh[1] script on your system and send
>>>>> back the result?
>>>>>
>>>>> You say sound is not working, can you clarify that a bit? Is no sound
>>>>> card registered? Is it registered but output stays silent?
>>>>>
>>>>> - Lars
>>>>>
>>>>> [1] https://www.alsa-project.org/wiki/AlsaInfo
>>>>> <https://www.alsa-project.org/wiki/AlsaInfo>
>>>>>
>>>>>
>>> Hi,
>>>
>>> from reading provided files it seems that you use snd_intel_hda driver,
>>> it should be possible to git bisect it between 5.9 and 5.10 as it wasn't
>>> replaced.
>>>
>>> Catpt driver is used on machines using DSP.
>>>
>>> Amadeusz