Haswell audio no longer working with new Catpt driver

[Lars-Peter Clausen]

On 1/1/21 2:25 PM, Christian Labisch wrote:
> Hi Takashi,
>
> Thanks for your suggestion - unfortunately it does not work.
> Still no sound after adding the boot parameter and a reboot.

Can you run `cat /sys/module/snd_hda_intel/parameters/power_save` and 
check whether it is still 0 when the system is running?

>
> Regards,
> Christian
>
> On Fri, 2021-01-01 at 13:09 +0100, Takashi Iwai wrote:
>> On Fri, 01 Jan 2021 12:10:23 +0100,
>> Christian Labisch wrote:
>>> Hi Lars,
>>>
>>> Thanks for your response, as requested I ran alsa-info while playing audio.
>>> Please check the attached information - to me it looks like it being a bug.
>>> It should affect many users, will it be solved in the next release 5.10.5 ?
>> It's likely some runtime PM-related changes that caused this behavior
>> change.  But, there must be some program that sets the power_save
>> option explicitly on your system.  As dmesg shows, the default
>> power_save to this device has been suppressed, but it's activated by
>> the later action.  On, 5.9.x, this didn't take effect, but on 5.10.x,
>> this became effective, as it seems.
>>
>> You can try to pass power_save=0 option to snd-hda-intel module (or
>> boot with snd_hda_intel.power_save=0 boot option).  It could work
>> around the issue, although it's no solution.
>>
>>
>> thanks,
>>
>> Takashi