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The $30,000 Mac Pro can use these cards, Apple did say they were going for the modular approach for this system. The drivers are getting more features added slowly. Catalina didn't get 5700 series support until the 3rd release version 10.15.3? There is audio codec recognized but not...

The Ryzen CPU code is for the APUs, which is for the graphics. This caused quite a stir last year. We found this in the Apple graphics kexts. The same thing happened with the 5000 series cards. We had to wait for the 6000.kext to include the device ID. It is already in the Framebuffer...

The Mac Pro that people bought last year will need updated graphics cards. currently Big Navi cards load the Framebuffer kext. Looking at Catalina where big navi support is found in snippets, BS has much more support. A few months and we should have Big Navi working.

That is normal with DP/HDMI audio. There is no option to adjust volume, you need to use the TV or monitor volume. As long as the audio is synched it in time that’s the best you can get.

Are you using the latest kernel patches? There are 39 in the new package. The last two improve the graphics card performance, but may cause HDMI or other audio to fail. #38 is the Algrey fix PAT, #39 is Shaneee's fix PAT. It is recommended to disable one of these patches to fix audio...

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B550 necesita SSDT-CPUR.aml o hay problemas, es posible B450 con nuevas BIOs necesitas también? Poner in ACPI y tu config.plist ACPI sección. DSDT no usa con Open Core, solamente SSDT para soluciones de configuración.

If the audio output for the system is out of synch there are a few items like the kernel patches, HDAU and ALC layouts that can correct it in most cases. Even though you are using one device over the other, proper layouts for each can affect the performance of the other non used device or...

The EFI folder has many "extras" I assembled 2 of your USB related SSDTs and cleaned up the Boot and ACPI folders. Audio has always been a problem with the AMD APUs, the synch is out of synch. Sleep is usually fixed by mapping out your USB ports. There are lots of guides to do that...

You may try this for audio. https://forum.amd-osx.com/index.php?threads/mini-guide-for-amd-applelac-kext-custom-builds.1298/

Welcome to the forum, it’s great to have a AMD specific forum with some really great people.

Ok, sorry didn't see that and assumed it was. I have no experience in OC in Legacy mode.

Hang on a minute, forgot to do an OC Snapshot. Make sure to enter bios and select the proper UEFI (USB or SSD) EFI source.

A few things needed fixing. 1. You have a boot file similar to Clover Legacy mode (remove). 2. ACPI I removed SSDT EC, USBX (replace with AMD version). 3. config.plist had "Warning remove before booting". (remove).

EFI is winRar. Cant open.

Clover is only used to pull the Audio codec (raw) so you can load it and configure it for your Mobo. The only other way to get the raw codec is to use Linux. This new clover option is a great, simple way to retrieve your audio codec.

This may help for audio. Mini Guide for AMD AppleLAC.kext custom builds.

Nvidia GT(X) 700 series except 750, 750ti. GT 710 GDDR3 models. Not GDDR5. AMD HD7XXX series, R9 2XX, 3XX. Stay away from XFX for these older AMD cards.

Graphics Card most likely not going to work, its probably a Lexa architecture not Baffin like the RX 460-560. Saphire made one of a cut down RX 460-560 board, its Device ID is 0x67EF or 0x67FF like the RX460-560 cards.

Nvidia cards in the Maxwell 900 series, 750(ti) can work in MacOS but only with Nvidia Web Drivers. Nvidia stopped at High Seirra and never made any for Mojave or newer MacOS versions. For that card to work you will need to Use the web drivers and either Sierra or High Sierra. Maybe El...