Sonoma - audio low power mode problem

[darthsian]

Hi all. On macOS Sonoma, the sound problem we last had many years ago came back to me. When no sound plays for a while, about 20 sec, the sound card goes into low power state mode and then if any sound is supposed to play, part of that sound doesn't play or doesn't play at all. This is most noticeable with notification sounds. It takes too long to wake up the audio from the low power state. Previously we solved this by e.g. using the Antipop script, which did not allow the sound card to go into low power state mode, but I could not find anything similar and functional for Sonoma. Does anyone have a similar problem?

Opencore 0.9.6
AppleALC (last version)

Gigabyte z390 Aorus Master
ALC1220

[cankiulascmnfye]

@darthsian

 

You could try to inject `AFGLowPowerState` (value 01 or 03)  into your Audio Device via DeviceProperties and see if it makes a differenc (PCI path might differ on your machine):

 

[darthsian]

5 hours ago, cankiulascmnfye said:

@darthsian

 

You could try to inject `AFGLowPowerState` (value 01 or 03)  into your Audio Device via DeviceProperties and see if it makes a differenc (PCI path might differ on your machine):

 

Thanks for suggestion, but I try this before and it won't work. In the meantime, I modified @mattsday antipop script and it works.

Edited November 19, 2023 by darthsian

[cankiulascmnfye]

@darthsian

 

Congrats. Maybe you could post your modified script so other users who have the same issue can benefit from it.