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Wait, the 1.4.3 update in the code is about the No-hda-gfx properties that is needed in some case, but does not fix the KP related to the case when hda-gfx exists. This fixes the KP but it's not an elegant solution IMO. - Adds time to the wake procedure because the function has to timeout...

IDK why that could have been helping, but I've tried it anyway, with no result.

I've commented trying to bring some more info and attention.

Sorry to hear that, hope for a fix soon. Did someone write an issues on GitHub?

Can you please try all the layouts for your codec? See if it happens with all layouts, because with another layout(in my case 27) it seems to work normally. Just pls remember that this is a workaround and when fixed the update to the new AppleAlc would be ideal

Anyway the bug in the current release is that IF the hdmi/dp cable is disconnected then the system wakes then KP. It's not totally broken

I'm encountering this issues too, tomorrow I'll further investigate if I find some spare time

Probably it's something to do with how Catalina manages audio, or sleep, I don't know, but we should track this bug.

Just pick the 1.2.8 as I wrote in the update above, and try different layout-ids because that specific id that you are using might not be in this build

I've tested the 1.2.4 (release before the patch Dgvozdenovic mentioned) compiled with the latest Lilu, and it works, it recovers from sleep normally. Can you pls confirm this? IMPORTANT NOTE: THIS VERSION OF APPLEALC REQUIRE -alcbeta IN THE BOOTARGS TO WORK AND THE LATEST VERSION OF LILU...

Nice discovery, I'm building the 1.2.4 version for Catalina for testing. Yes i think we should submit a bug report

I'm currently out of ideas, and I'm searching for a method to disable DP audio for a workaround

i can confirm that this do NOT resolve this problem

I've finally checked the debug of AppleALC that i'm attaching: 2019-10-09 16:09:03.655835+0200 localhost kernel[0]: (Lilu) <Lilu`lilu_os_log> AppleALC: alc @ (DBG) discovered HDAConfigDefault with 419 entries 2019-10-09 16:09:03.662473+0200 localhost kernel[0]: (Lilu) <Lilu`lilu_os_log>...

Another really helpful thing would be having your log of appleALC but you need to install the debug version and start with -alcdbg

I'm searching in AppleALC's code and I may have found something, I'll keep you updated. If someone else with programming skills wants to help, it would be appreciated: I'm looking at kern_alc both header and cpp files, it seems to be the right way to go, since it check for HDAU and uses...

Same for me, updated from Mojave.

Thanks for sharing your files, i've seen that you too crash on "AudioAUUC 1.70", maybe it's something to do with how AppleALC interfaces with that(?), at this point i'm just assuming things and throwing ideas lol

After I've spent all the day for a solution I can confirm that I don't know what to do to fix this. If anyone has an idea pls share

UPDATE 2: If AppleALC is removed the system does not crash after sleep, going to check out AppleALC code to seek smth useful