PatchAPIC for i9 9820X

[oli.mathieu]

Hello

I having hard time to Install Monterey with OC one of my Hackintosh with a "cursed CPU" aka i9 9820X.

I've on EFI with OC running the same Mobo with i9 10900X but it kernel panic with the i9 9820X

The actual install is Catalina with Clover and I checked the "Patch APIC" checkbox. It does the trick
But there is no such thing on Opencore

I've found this and this. It might work ... I need a little bit of assistance.
With clover I drop the DSDT (F4) ... APIC.aml attached file
I erased all entries with the same ProcessorID FF ..... APIC_i9_9820X_V1.aml
Then I change the first processor IDs to 00 ...... APIC_i9_9820X_V2.aml
Next I'll add it do OC/APCI folder and to config.plist ➧ APCI

AM I doing things the right way ?
Thanks for any help

 

[timetrapped]

Did you ever figure this out? I'm thinking I'll have to switch to OpenCore to get my build to work with Monterey, but not sure what I'll do if the 9820x doesn't work...

 

[Middleman]

Hello

I having hard time to Install Monterey with OC one of my Hackintosh with a "cursed CPU" aka i9 9820X.

I've on EFI with OC running the same Mobo with i9 10900X but it kernel panic with the i9 9820X

The actual install is Catalina with Clover and I checked the "Patch APIC" checkbox. It does the trick
But there is no such thing on Opencore

I've found this and this. It might work ... I need a little bit of assistance.
With clover I drop the DSDT (F4) ... APIC.aml attached file
I erased all entries with the same ProcessorID FF ..... APIC_i9_9820X_V1.aml
Then I change the first processor IDs to 00 ...... APIC_i9_9820X_V2.aml
Next I'll add it do OC/APCI folder and to config.plist ➧ APCI

AM I doing things the right way ?
Thanks for any help

Hi @oli.mathieu,

Perhaps this might help? This is a setting used for Opencore
for the equivalent of patch APIC.

 

[oli.mathieu]

Hi @oli.mathieu,

Perhaps this might help? This is a setting used for Opencore
for the equivalent of patch APIC.

View attachment 549511

Hi Middle Man
Thanks
I certainly used this. I spend a lot of time trying to make it work.
But I gave up and switch to an i9 7900X.

 

[Middleman]

Hi Middle Man
Thanks
I certainly used this. I spend a lot of time trying to make it work.
But I gave up and switch to an i9 7900X.

I see. I guess that was a good logical decision. Unfortunately some chips can be pretty tricky to enable.
The alternative for some is probably to upgrade Clover. Personally if I had it I'd have given it a try with OC.
The most important is probably the SSDT-EC-USBX, SSDT-AWAC and SSDT-CPUR for the more recent OSes.
Without them properly defined, the system just won't boot.

 

[etorix]

The actual install is Catalina with Clover and I checked the "Patch APIC" checkbox. It does the trick
But there is no such thing on Opencore

Out of curiosity, why not "just" update Clover to a version which supports Monterey?

I've found this and this. It might work ... I need a little bit of assistance.

Thanks for coming up with the (very weird) issue and its solution.
APIC.aml is completely scrambled: 10, 04, 08, 0A, 02, 12, 14, 16, 18, 1A, 03, 05, 09, 0B, 11, 13, 15, 17, 19, 1B

Since you have two systems, what does the APIC looks like with the i9-10900X?
And what is the DSDT? From Khronokernel's explanation, the solution depends on it.

With clover I drop the DSDT (F4) ... APIC.aml attached file
I erased all entries with the same ProcessorID FF ..... APIC_i9_9820X_V1.aml
Then I change the first processor IDs to 00 ...... APIC_i9_9820X_V2.aml
Next I'll add it do OC/APCI folder and to config.plist ➧ APC

That, and of course delete the native APIC table.
ProcessorID FF is for cores which do not exist in this particular chip ("Enabled: 0")

Assuming the DSDT enumerates CPUs in order, the APIC for 10 cores / 20 threads should look like this.

 

[oli.mathieu]

Out of curiosity, why not "just" update Clover to a version which supports Monterey?

That is a good question, I use OC for almost 2 years now and I'm a bit rusty with clover.

Thanks for coming up with the (very weird) issue and its solution.
APIC.aml is completely scrambled: 10, 04, 08, 0A, 02, 12, 14, 16, 18, 1A, 03, 05, 09, 0B, 11, 13, 15, 17, 19, 1B

Since you have two systems, what does the APIC looks like with the i9-10900X?
And what is the DSDT? From Khronokernel's explanation, the solution depends on it.

I followed Khronokernel's explanation (with the original DSDT), but all my attempts failed

Assuming the DSDT enumerates CPUs in order, the APIC for 10 cores / 20 threads should look like this.

Thanks
I still have the 9820X, and give a try later when the hackintosh won't be in used
I keep you posted
Many Thanks