Rx 580 running in Mac Pro 3.1 only in safe mode


rcfernandez79

macrumors newbie
Original poster
Mar 18, 2019
3
0
planeta tierra, creo.
I ve installed a Rx 580 gpu in my Mac Pro 3.1 early 2008. It works only in safe mode. In normal mode, only white screen.
Any help??
Could i update processors??
[doublepost=1552897544][/doublepost]
RX 580 drivers requires SSE4.2, Mac Pro 2008 Xeons don't have it.

Any AMD GPU since GCN1.0 only works with MP5,1.
Change
RX 580 drivers requires SSE4.2, Mac Pro 2008 Xeons don't have it.

Any AMD GPU since GCN1.0 only works with MP5,1.
update processors is it ppsible??
 

Ludacrisvp

macrumors 6502
May 14, 2008
349
130
Older thread I know but it came up in related section at bottom of a thread. @OP you can now use the RX 580 in 10.14.5 via a patch from netkas.
 

Svenisak

macrumors newbie
Jul 11, 2011
10
1
Older thread I know but it came up in related section at bottom of a thread. @OP you can now use the RX 580 in 10.14.5 via a patch from netkas.
Has anyone gotten this to work? I've tried both with a Sapphire Pulse RX560 and a RX580. I get nothing! The fans spin up, so it must get power. But the screen is black. Actually the screen behaves just like the computer isn't even turned on. The original 2600 XT card works just fine, so there's nothing wrong with the PCIe slot.

Any suggestions would be welcome.
 
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chrfr

macrumors G3
Jul 11, 2009
8,205
2,530
Has anyone gotten this to work? I've tried both with a Sapphire Pulse RX560 and a RX580. I get nothing! The fans spin up, so it must get power. But the screen is black. Actually the screen behaves just like the computer isn't even turned on. The original 2600 XT card works just fine, so there's nothing wrong with the PCIe slot.

Any suggestions would be welcome.
The CPU does not have the features required to use the RX series cards, and the CPU cannot be upgraded to one which supports the RX cards.
 

Svenisak

macrumors newbie
Jul 11, 2011
10
1
The CPU does not have the features required to use the RX series cards, and the CPU cannot be upgraded to one which supports the RX cards.
That's what the patch is for, isn't it? At least that's what netkas claims.
 

Ludacrisvp

macrumors 6502
May 14, 2008
349
130
The CPU does not have the features required to use the RX series cards, and the CPU cannot be upgraded to one which supports the RX cards.
But...

C5B3FBCB-DC7F-4C06-ADF4-8F14D2DCF1B8.jpeg 00A14F8F-E043-4508-842B-D45879BC9FFC.jpeg 56123CEE-E886-4989-A58E-AF7D8EE87C67.jpeg
[doublepost=1567540396][/doublepost]Here was when I briefly had the red devil installed. Took up too much space so put in the sapphire pulse instead and moved this to another machine.
0C6A44CE-2A8D-4540-8D50-DA42660C2B1B.jpeg
 

joevt

macrumors 6502
Jun 21, 2012
499
237
Maybe #17163 is a solution? It's a kext that emulates two missing SSE4.2 instructions used by newer macOS AMD drivers. It also lets me run World of Warcraft and Classic WoW on a MacPro3,1 running Mojave or High Sierra with a GTX 680 (but there's a strange problem with the text drawing).