trs96
Moderator
- Joined
- Jul 30, 2012
- Messages
- 25,471
- Motherboard
- Gigabyte B460M Aorus Pro
- CPU
- i5-10500
- Graphics
- RX 570
- Mac
- Mobile Phone
So here is something that happened. When I changed my SMBIOS fro iMac 13,2 or ,1 (don't remember which I had it as), to a Mac Mini 6,1 or ,2 (Whichever the i5 version is), it disabled my third monitor on my GT 740. I have 1 Mini HDMI, 1 DVI-D, and 1 DVI. I used a DVI to VGA adapter on the one dvi port that I could, because the way my windows laptop docking station and my desktop pc ports allow, that was the only way to utilize all three monitors on both work stations. When I updated my SMBIOS, it wouldn't detect that one monitor on the DVI to VGA adapter, so I thought maybe I was now limited to two monitors. I found out that is not the case because if I use a regular DVI cable then it works. Do you know how to maybe fix this? Is it macOS or my gpu?
I know of someone who got the integrated graphics working with an Nvidia card by using a specific ig-platform-id. They were using the iMac 13,2 smbios which supports integrated and discrete graphics working together.
For the i5 you've got the 6,1 Mac mini smbios is preferred. You might look into possibly enabling integrated graphics along with your GT 740 to give you use of the two DP outputs. Doing that is going to require config.plist changes that I'm not entirely informed on how to implement. I'm sure that the 6,1 Mac minis only use igfx such as the HD4000.
Possibly you could post your PR files and have @Sniki take a look at the bigger picture. I use DP to HDMI cables for onboard HD4000. The graphics look better to me this way than any Nvidia graphics cards that I've used. Probably worth the effort to enable your HD4000 and use that for two monitors and have the 3rd on HDMI from your GPU. Another option would be simply to add a second gfx card. The low cost GT 710 would work nicely for 1 extra HDMI and another DVI output.
https://www.tonymacx86.com/threads/tool-generate-proper-problem-reporting-files.235953/
If you read the Mac mini 6,1 graphics description they actually support DP to VGA adapters so you could possible get one of those if need be. Use it from onboard DP to your VGA monitor.
https://www.amazon.com/dp/B00Z08TZNU/?tag=tonymacx86com-20This model simultaneously supports 1920x1200 on an HDMI display or a DVI display using the included HDMI-to-DVI adapter and 2560x1600 on a Thunderbolt or Mini DisplayPort display or even a VGA display (with an optional Mini DisplayPort-to-VGA adapter.)
On this Amazon page they even show it used with an older MBP laptop via the mini-DP.
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