2009 Mac Pro won't boot with new RX 580
Hi, Thanks in advance for any help. I have a 2009 Mac Pro -> 5,1 and upgrade CPUs running OS X 10.13.6. I wanted to upgrade my video card. I have tried the Vega 56 and now the Sapphire Nitro RX 580. Using both Aux power ports. These were my results:
When I tried the Vega, it booted fine, BUT NO VIDEO. Thinking it may be a bad card I returned for a replacement and am waiting on that. Resigned to save for a PC build.
So I then purchased the RX 580 (nice blue card)! When I installed the card I get nothing. Just a click from the PSU and that’s it.
So I put my stock GT 120 card back in and everything is fine. Boots just fine. I tried the RX 580 again in the other x16 slot. “Click” was all I got. GT 120 back in boots fine.
I almost think it is a PSU issue; that maybe it is not putting out the power needed. The voltages on the aux ports is fine, but I have no way to test with a calibrated load to see if indeed the PSU is putting out the power it is supposed to.
Any thoughts? Am I doing something wrong or forget to do something?
Is dit een goede vraag?
What method did you use to flash your machine to 5,1?
What CPUs are you running?
door mayer
mayer, I used the the tool at the netkas forum and the firmware from Apple. Both links can be found in the notes of this video https://www.youtube.com/watch?v=3Z2ZSie7...
I am running a pair of X5680 SLBV5 3.33GHZ.
-mark
door Mark Symms
Anyone have any ideas?
door Mark Symms
Could it be a driver issue?
Have you tried booting it with the new card and then use the screen sharing function on another computer?
door Martin Carlenfors
The drivers themselves are included with OSX 10.13. But it won't boot period with the RX 580. I guess I could try again with the Vega 56 card.
door Mark Symms
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