MP 1,1-5,1 No boot screen using GTX 1070Ti on 5,1

[CF Warrior]

Hi everyone, I'm fairly new to Mac Pros and having a heck of a time upgrading from 10.13.6 to 10.14 Mojave. I've spent hours reading and trying things but here are my current issues.

Are you can see I've upgraded the BootRom already and have new PGU installed using webdrivers.
Problems:
1) HDMI -> DVI works but not Apple Cinema display using mini DP -> DP doesn't work
2) I cannot upgrade to Mojave because I don't have boot screen to allow me to select the drive

I did do youtube video EFI with Opencore and the following downloaded files.

Any help would be greatly appreciated to get me back working.

 

[spyguy10709]

10 series cards don't work in mojave or later

 

[KeesMacPro]

Nvidia GPUs (except for the Kepler family) are not supported anymore under Mojave and newer (regardless OC or not).
So basically you could stay with High Sierra or buy a AMD GPU and install Mojave/Catalina/Big Sur.

 

[startergo]

For boot screen only you have to use the latest commit of OpenCore, which has 2 new quirks for NVidia GOP ROMs.

 

[CF Warrior]

10 series cards don't work in mojave or later

Thanks for confirming my issue.

 

[CF Warrior]

Nvidia GPUs (except for the Kepler family) are not supported anymore under Mojave and newer (regardless OC or not).
So basically you could stay with High Sierra or buy a AMD GPU and install Mojave/Catalina/Big Sur.

Ok, so I can find Radeon 580 or something and I should be good installing new MacOS, thanks.

I’ll keep my eyes open for a used card for a reasonable price.

I have 2 of these GTX 1070 Ti cards luckily I got for cheap from friend.