[bug report] 'ASoC: Intel: haswell: Power transition refactor' and PulseAudio

[Cezary Rojewski]

On 2020-09-01 3:38 PM, Pierre-Louis Bossart wrote:
> On 9/1/20 6:33 AM, Cezary Rojewski wrote:

...

>>
>> Hello Christian,
>>
>> Thank you for report! Issue is a known one to us and has already been 
>> addressed by:
>>
>>      [PATCH v4 00/13] ASoC: Intel: Catpt - Lynx and Wildcat point
>>      https://www.spinics.net/lists/alsa-devel/msg113762.html
>>
>> waiting for final dependency to be merged (Andy's resource-API 
>> changes, as Mark already added the SPI ones) so v5 with review changes 
>> can be provided. Shouldn't be long before this gets merged. As 
>> consequence, /haswell/ ceases to exist.
> 
> That leaves people with no working sound for 5.8 and 5.9.
> 
>> Basically, once power-cycle (D0 -> D3 -> D0 transition flow) had been 
>> fixed, more - previously hidden - problems arisen. Instead of sending 
>> 70+ patches to Mark refactoring existing code to recommended flow (+ 
>> readability and performance improvements), replacement is provided 
>> along with old code being removed entirely.
>>
>> For now, if there's a possibility for you to modify your kernel, said 
>> patch can be safely removed from your local repo. Note: following is 
>> the outcome:
>> - DMA init may occasionally fail on early boot (audio card won't be 
>> present at all, requires reboot)
>> - D0/D3 flow doesn't follow recommended sequence and thus power-saving 
>> may be limited or non-existent
>> Probably still better than permanently fuzzied audio..
> 
> Doesn't this mean that a revert is needed and applied to -stable for 5.8 
> and 5.9?
> 

I believe you're right Pierre, revert should be provided. I'll see to it.

Czarek