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HD7850 not working on Mojave

Joined
Jan 8, 2014
Messages
7
Motherboard
Asrock Z77 PRO3
CPU
i5-2500K 3.3GHz
Graphics
Sapphire Radeon HD 7850
Mac
Classic Mac
Mobile Phone
Hi all,

I am struggling now for two weeks to get my card working properly - I have Sapphire HD7850 2GB OC and cannot seem to get hardware acceleration working. I am using vanilla mackintosh build.
I only seem to get 5mb vram available for my GPU. Screenshot attached together with my clover.plist.

These are my specs:
  • Asrock Z77 Pro3
  • i5-2500k
  • Sapphire HD7850 2GB OC
I am using these kexts:
  • WhateverGreen
  • Lilu
  • AppleALC
  • RealtekRTL8111
  • USBInjectAll
  • VirtualSMC
I tried all ports (2 mDP, HDMI, DVI), tried ati injector, without ati injector, radpg boot flag but nothing seems to work.
Screenshot 2019-09-08 at 11.21.54.png
 

Attachments

Joined
Jan 8, 2014
Messages
7
Motherboard
Asrock Z77 PRO3
CPU
i5-2500K 3.3GHz
Graphics
Sapphire Radeon HD 7850
Mac
Classic Mac
Mobile Phone
Any ideas what I could try? Or my config is hopeless?
 
Joined
Aug 26, 2017
Messages
154
Motherboard
Z170X-UD5-TH
CPU
i7-6700K
Graphics
RX 580
Mac
iMac
Classic Mac
iMac, LC, Power Mac, Quadra
i am no sur, but on mojave a list of old video card. i suddget to you to change your Sapphire HD7850 2GB OC for RX580
 
Joined
Apr 19, 2019
Messages
1
Motherboard
Intel DQ67OW
CPU
Intel I5 2500K
Graphics
AMD Radeon HD7770
I am having the same problem. I'll get back with the solution to u if I get mine working
 
Joined
Jan 8, 2014
Messages
7
Motherboard
Asrock Z77 PRO3
CPU
i5-2500K 3.3GHz
Graphics
Sapphire Radeon HD 7850
Mac
Classic Mac
Mobile Phone
i am no sur, but on mojave a list of old video card. i suddget to you to change your Sapphire HD7850 2GB OC for RX580
I am thinking about it. However, if it is possible to make it work somehow... and I saw posts of people making it work, even though nothing I read from their posts helped me. This would be better option since I don't really need that powerful gpu.

I am having the same problem. I'll get back with the solution to u if I get mine working
If I am not mistaken, 7770 is harder, if not even impossible to make it work. But don't take that for granted, I think I saw somewhere that 7850 is the oldest supported in mojave.
 
Joined
Jun 10, 2017
Messages
31
Motherboard
MSI Z270 Gaming Pro Carbon
CPU
i7 6700k
Graphics
7850
Mac
MacBook Pro
Mobile Phone
Android, iOS
Anyone managed to get through this.. I tried it on Catalina but same black screen issue. but theres a new twist. if I let my hackintosh to go to sleep. then the display automatically comes up. and works fine... any suggestions why??
 
Joined
Oct 10, 2015
Messages
440
Motherboard
Z370 AORUS Gaming 3
CPU
i5-9600K
Graphics
RX 580
Mac
MacBook Pro
Mobile Phone
iOS
Anyone managed to get through this.. I tried it on Catalina but same black screen issue. but theres a new twist. if I let my hackintosh to go to sleep. then the display automatically comes up. and works fine... any suggestions why??
Some HD 7850 cards come with UEFI while the others don’t. Would you check yours?

Mine is MSI’s and I haven’t flashed it to UEFI.
 
Joined
Jun 10, 2017
Messages
31
Motherboard
MSI Z270 Gaming Pro Carbon
CPU
i7 6700k
Graphics
7850
Mac
MacBook Pro
Mobile Phone
Android, iOS
Some HD 7850 cards come with UEFI while the others don’t. Would you check yours?

Mine is MSI’s and I haven’t flashed it to UEFI.
Don't know how to check.. could you tell me the way?? the GPU Model is Sapphire HD 7850 Dual X with 2 GB GDDR5 RAM (2 Mini DP, 1xHDMI, 1xDVI) I am using the HDMI Port.
 
Joined
Oct 10, 2015
Messages
440
Motherboard
Z370 AORUS Gaming 3
CPU
i5-9600K
Graphics
RX 580
Mac
MacBook Pro
Mobile Phone
iOS
Don't know how to check.. could you tell me the way?? the GPU Model is Sapphire HD 7850 Dual X with 2 GB GDDR5 RAM (2 Mini DP, 1xHDMI, 1xDVI) I am using the HDMI Port.
If you don’t have Windows, you could just try enabling/disabling CSM.
 
Joined
Jul 23, 2012
Messages
792
Motherboard
GA-Z77N-WIFI-F3-Clover
CPU
E3-1225 v2
Graphics
GT 640 | P4000
Mac
Mac mini
Don't know how to check.. could you tell me the way?? the GPU Model is Sapphire HD 7850 Dual X with 2 GB GDDR5 RAM (2 Mini DP, 1xHDMI, 1xDVI) I am using the HDMI Port.
you may use this tool to dump the VBIOS info

my Sapphire HD7770 Vapor-X stock VBIOS was not UEFI compatible
I have updated the GOP ROM using the above tools

The VBIOS consist of the Legacy ROM (CSM mode) and the GOP Rom (UEFI mode)
Code:
Sapphire HD7770 Vapor-X Cape Verde_updGOP.rom: (OpRom Image)
==========================================
Image 1 -- Offset 0x0
=======================
  ROM header contents:
    Signature              0xAA55
    PCIR offset            0x0228
  PCI Data Structure
    Signature              PCIR
    Vendor ID              0x1002
    Device ID              0x683D
    PCI Revision           0x00
    Image size             0x10000
    Code revision          0x0F14
    Indicator              0x00   (Not last image)
    Code type              0x00   (PCAT Image)
  Legacy BIOS File Name    215X03E0.V42
  Legacy BIOS Part Number  113-C44101002-V02
  Legacy BIOS Build Number 226009
  Legacy BIOS Change List  766779
  ByteCheckSum             0
Image 2 -- Offset 0x10000
=======================
  ROM header contents:
    Signature              0xAA55
    PCIR offset            0x001C
  PCI Data Structure
    Signature              PCIR
    Vendor ID              0x1002
    Device ID              0x683D
    PCI Revision           0x00
    Image size             0xE800
    Code revision          0x0000
    Indicator              0x80   (last image)
    Code type              0x03   (EFI Image)
    EFI Signature          0x0EF1
    Compression Type       0x0001 (compressed)
    Machine type           0x8664 (X64)
    Subsystem              0x000B (EFI boot service driver)
    EFI image offset       0x0058 (abs: 0x10058)

  Dump Gop Driver Info:
    Machine type code      X64
    Size Of Gop Image      98144 (95 KB)
    GOP Driver Name: AMD GOP X64 Release Driver Rev.1.60.0.15.50.Feb  1 2016.14:59:32
    GOP AMD_Build          425
    GOP AMD_CL             1233155
 
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