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streak8047

macrumors member
Original poster
Nov 16, 2019
82
12
Showpicker not shows on MSI RX580 Gaming 8GB GPU, however GT 680 was shows shows picker mode,Rx 580 frame buffer detected
as Radeon Frame buffer ,after installing Radeon boost Kext enable H264 & HEVC ,Performance not the best expected for RX580 card with MacPro 5.1 with dual tray 3Ghz processor .

Possible to Modding MSI RX580 to Mac-edition for orinco Frame Buffer ,there was no dual bios switch on this model ,any fix for Show Picker
Mode on MSI RX 580 on Opencore 0.65 version
hd264.jpeg
showpick.jpeg
opencl.jpeg

 
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h9826790

macrumors P6
Apr 3, 2014
16,628
8,557
Hong Kong
Showpicker not shows on MSI RX580 Gaming 8GB GPU, however GT 680 was shows shows picker mode,Rx 580 frame buffer detected
as Radeon Frame buffer ,after installing Radeon boost Kext enable H264 & HEVC ,Performance not the best expected for RX580 card with MacPro 5.1 with dual tray 3Ghz processor .

Possible to Modding MSI RX580 to Mac-edition for orinco Frame Buffer ,there was no dual bios switch on this model ,any fix for Show Picker
Mode on MSI RX 580 on Opencore 0.65 version View attachment 1722172 View attachment 1722174 View attachment 1722175

More than 80% of the cases was because the card was flashed (e.g. for OC, or downvolt, etc) by the last owner.

Around 15% are the factory ROM which has "broken" or missing UEFI GOP.

And about 5% is simply not compatible, or incorrect OC config, etc.

In your case, 99% the problem can be fixed by downloading a factory ROM from TechPowerUp, and flash your card back to factory state.

You may need to try a few different ROM, but almost all users has this problem can fix it by simply flashing the card with the factory ROM.
 

h9826790

macrumors P6
Apr 3, 2014
16,628
8,557
Hong Kong
I mean can get orinco frame buffer
You can, but via OpenCore injection, not by modding the ROM.

Whenever you mod the ROM, you will break the UEFI GOP, which means, no more boot picker.

Also, unless you 100% sure Orinoco framebuffer fits your card, otherwise, leave it use RadeonFramebuffer usually is better.
 
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streak8047

macrumors member
Original poster
Nov 16, 2019
82
12
@ h9826790 Thanks Your advice was solved the issue ,now boot picker was showing, bios was flashed to techpower up factory default after that it works fine .

Now need to increase the performance of the GPU ,RadeonFramebuffer was showing very low performance
 
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