MP 1,1-5,1 OpenCore bootscreen shows display failure on MacPro

[lukasss]

Hi,

i've installed OpenCore (Version 0.6.1 DRM-Fix) on my MacPro with the graphic card XFX Radeon GTS XXX ED RX580 8GB following this original manual. I know, that this card is not recommended, but it works for me out of the box without any problems running Mojave. The bootscreen and bootpicker are working, but there seems to be an issue in displaying/ rendering?! Have you seen this before? Can you help me? After booting i get on the desktop and everything works fine for me.

System:

• Mac Pro 4.1 early 2009 updated to 5.1
• macOS Mojave 10.14.6
• processor: 2,66 GHz Quad-Core Intel Xeon
• ram: 16 GB 1066 MHz DDR3
• display: Eizo CG223W (1680 x 1050) connected with DP

 

[h9826790]

Hi,

i've installed OpenCore (Version 0.6.1 DRM-Fix) on my MacPro with the graphic card XFX Radeon GTS XXX ED RX580 8GB following this original manual. I know, that this card is not recommended, but it works for me out of the box without any problems running Mojave. The bootscreen and bootpicker are working, but there seems to be an issue in displaying/ rendering?! Have you seen this before? Can you help me? After booting i get on the desktop and everything works fine for me.

System:

• Mac Pro 4.1 early 2009 updated to 5.1
• macOS Mojave 10.14.6
• processor: 2,66 GHz Quad-Core Intel Xeon
• ram: 16 GB 1066 MHz DDR3
• display: Eizo CG223W (1680 x 1050) connected with DP

XFX firmware issue. No fix, unless you flash another RX580 ROM to your card (even the risk isn't that high, but this process may brick your card)

 

[MarkC426]

I know, that this card is not recommended, but it works for me out of the box without any problems running Mojave. The bootscreen and bootpicker are working, but there seems to be an issue in displaying/ rendering?!

This is a contradiction....
You say it works without any problems, no it doesn't.

As mentioned by H98, incompatible GPU.