Man.... the more I keep seeing these posts about 12.1 and OC, the more I am inclined to try it... I generally like to wait for OS builds to be around the .3 or .4 stage (meaning more stability), but if Monterey is running that good on our machines already?
Also want to try 0.7.7, but I am afraid, as I was not able to get 0.7.6 working, even with Martin's package. Just kept getting black screens instead of the OC boot picker.
About the work of AMD 5700-5700XT with MacOs there are a lot of negative reviews in the community. I can tell what problems I encountered and how I solved them
1. I noticed that on my card only one port shows the bootscreen, the rest of the ports are enabled only after the system boots. I often work on multiple monitors, so I set up my main and extended monitors. now I always see OС bootscreen
2. on my second cMP I use a rather old Sony TV as a display, it only supports 720p at a frequency of 50Hz - (any other settings cause a black screen). On one of the outputs of the video card, I see a boot option and a boot logo, but how Monterey 12.1 is loaded - there is a black screen on all outputs - I found out that Monterey for some reason sets it to 25 or 30 Hz and it is clear that the monitor does not work in this mode - this problem was not on bigsur) I solved this problem: I connect the display via simple HDMI switch 3 to 1- it gives correct settings for SONY - 720p 50Hz
3. there are many posts about the black screen with Martin Lo's config, but Martin gave a treatment for this problem
Martin posted:
"Once you upgraded to Big Sur, you may find that some of the ports are disabled on your graphic card.
If that happens, you may follow the steps in this video to re-gain multi monitors support.
For your reference, the number you need to search in the config plist is 7BA5B2D9E42DDD94, you should replace that by 27AD2F918AE68F61
N.B. Once you perform this mod. HWAccel will be disabled in Mojave.
If you want to install my OpenCore package (for Mac Pro 5,1), please click the following link, read that post, and follow the instruction at there."
MY COMMENTS: I only encountered this problem on some later versions - I don’t remember exactly, but probably 7.4 or 7.5 - and Martin’s recommendation worked for me on BigSur, but when I tried to do this trick on Monterey - cMP did not load - it means: on Monterey can't do this trick
MacPro 4.1/5.1, dual xeon 5680, 96Gb samsung RAM, 1Tb nvme 970EvoPlus, USB3 pcie card, OC 0.7.7, MacOS Monterey- MacPro 4.1/5.1, single xeon 5680, 32Gb samsung RAM, 1Tb nvme 970EvoPlus, USB3 pcie card, OC 0.7.7, MacOS Monterey