MP 1,1-5,1 Mac pro 5,1 no screen

[Jay0406]

Hello i have a mac pro 5,1 and i wanted to upgrade the graphics card i have use opencore patcher to get it to monterey but if i put my new graphics card in a sapphire radeon hd7950 i get no display and i don’t can find the problem anybody who knows a solution

 

[MarkC426]

Does your GPU support Metal?
I don't see it in the compatible list.

GPU Compatibility List for cMP

Content: 1. Summary 2. Information on common GPUs that can be used in cMP 3. GPU power consumption 4. Color compatibility 5. Flashing nuances 6. What to choose? 7. Useful links. 1. Summary 1.1. There are 50+ GPU types that are compatible with cMP (classic MacPro = Mac Pro 1.1-5.1/...

forums.macrumors.com

 

[Jay0406]

Yes on the official site of apple it says so thats why i purchase it but apple says you need to have the mac version and that I don’t have but I tought I don’t have the boot screen that I don’t


Official link from apple

macOS 10.14 Mojave installeren op Mac Pro (medio 2010) en Mac Pro (medio 2012) - Apple Support (NL)

Meer informatie over hoe u uw Mac Pro (medio 2010) of Mac Pro (media 2012) voorbereidt op macOS Mojave.

support.apple.com

 

[Jay0406]

I wrote it wrong i meant the Radeon HD 7950

 

[MarkC426]

Do you have both 6 pin's connected.

You do not need a Mac version, boot screen is not essential.

Can you boot into a different OS version on your Mac Pro, to check GPU.

 

[Jay0406]

But i have the normal pc one and not the mac edition

 

[Jay0406]

I dont have a different os version i have 2 mini 6 pins to normal 6pins connected

 

[Borowski]

Not every card has GOP-functionality; i guess it is mandatory for oc.

But it is easy to add GOP w/ flashing the card.

 

[Jay0406]

How you mean??

 

[Jay0406]

Not every card has GOP-functionality; i guess it is mandatory for oc.

But it is easy to add GOP w/ flashing the card.

how you mean can you explain????

 

[Borowski]

Can you dump your videocard-bios? Access to a Windows-pc? Possible to update the bios of videocard?

 

[Jay0406]

Can you dump your videocard-bios? Access to a Windows-pc? Possible to update the bios of videocard?

i have no windows pc so that not gone work

 

[Jay0406]

With two gpu’s the old and the new one who is out of the mac pro powered it show this any one know how to fix

 

[MarkC426]

With two gpu’s the old and the new one who is out of the mac pro powered it show this any one know how to fix

Could you re-word this please.
It doesn't make much sense......?

 

[Jay0406]

Could you re-word this please.
It doesn't make much sense......?

I have my original and my new both in my mac pro and it sees something know but not good and i using the old one to get video output and because the mac only have to 6pin connection i am using a power supply from another pc to feed the new gpu

 

[Jay0406]

I have change positions now it sees it better but i stil don’t have a video output on the new one

 

[MarkC426]

Remove the 5770.
You cannot have a metal and non-metal card at the same time.

 

[Jay0406]

Okay i wil try but because its was not working before when i put it in as only one i don’t think it wil work

 

[Jay0406]

With only the 7950 nothing again

 

[MarkC426]

Do the GPU fans spin.
Have you tried different ports.

As mentioned above, it could be related to OC (I don't use it).
Do you have a spare drive you could install High Sierra onto with just the 5770 installed.
You can then check if it's the GPU/OC causing the problem (it may be a defective GPU).

 

[Jay0406]

Do the GPU fans spin.
Have you tried different ports.

Yes but on both ports no video output only when i put in both and use the video output of the old one

 

[Jay0406]

Yes but on both ports no video output only when i put in both and use the video output of the old one

Maybe one thing i need to add is that i am using open core patcher to run monterey

 

[MarkC426]

You may be better asking in the OpenCore thread:

OpenCore on the Mac Pro

This guide explains how to use the excellent OpenCore boot loader to install, run, and update the latest version of macOS on the MacPro5,1, resulting in a clean, unaltered operating system just like on a supported Mac.

forums.macrumors.com

I have no experience with OC sorry.
Check out post #7591

 

[Jay0406]

You may be better asking in the OpenCore thread:

OpenCore on the Mac Pro

This guide explains how to use the excellent OpenCore boot loader to install, run, and update the latest version of macOS on the MacPro5,1, resulting in a clean, unaltered operating system just like on a supported Mac.

forums.macrumors.com

I have no experience with OC sorry.
Check out post #7591

There maybe some other thing it doesn’t work my cmos battery holder is broken so I don’t have a cmos battery in my mac maybe that has something to do with the fact it doesn’t work

 

[Jay0406]

There maybe some other thing it doesn’t work my cmos battery holder is broken so I don’t have a cmos battery in my mac maybe that has something to do with the fact it doesn’t work

But that’s the way I bought it and it work like a normal mac pro so