MP 1,1-5,1 GTX680 with CMp, Open Core and MontereySupporting Only 1280x1080. Is 4K Possible cMP and Open Core?

[danallen]

On my desk, 2012 cMP with GTX 680 and Catalina deliver 4K video to Samsung U28D590. The same cMP, with Martin Lo's Open Core and Monterey, video is limited to 1280x1080.

Would upgrading to RX 580 graphics deliver 4K in Monterey with Open Core?

 

[joevt]

On my desk, 2012 cMP with GTX 680 and Catalina deliver 4K video to Samsung U28D590. The same cMP, with Martin Lo's Open Core and Monterey, video is limited to 1280x1080.

Would upgrading to RX 580 graphics deliver 4K in Monterey with Open Core?

RX 580 should definitely get 4K.

Strange that you can't get 4K from GTX 680 in Monterey like you can in Catalina. Maybe try running AllRez in Catalina and Monterey. Zip the output from each and attach to a reply post. Then we can compare the results to see what's different.

Does Martin Lo's Open Core include Kepler patches like OCLP does? Maybe you should try OCLP.
https://dortania.github.io/OpenCore-Legacy-Patcher/PATCHEXPLAIN.html
https://dortania.github.io/OpenCore-Legacy-Patcher/TROUBLESHOOTING.html

 

[Borowski]

Did you apply all needed root-patches after install? With Monterey root-patches for nVidia is mandatory due to missing drivers.

 

[danallen]

Did you apply all needed root-patches after install? With Monterey root-patches for nVidia is mandatory due to missing drivers.

I did not even look into that, thank you for the tip.

 

[danallen]

RX 580 should definitely get 4K.

Strange that you can't get 4K from GTX 680 in Monterey like you can in Catalina. Maybe try running AllRez in Catalina and Monterey. Zip the output from each and attach to a reply post. Then we can compare the results to see what's different.

Does Martin Lo's Open Core include Kepler patches like OCLP does? Maybe you should try OCLP.
https://dortania.github.io/OpenCore-Legacy-Patcher/PATCHEXPLAIN.html
https://dortania.github.io/OpenCore-Legacy-Patcher/TROUBLESHOOTING.html

Is the output you are referring to from AllRez? I will give it a try. I really would help to get on current OS, Sonama, not just Monterey. On Catalina, incompatibility is growing within my browsers, which require newer MacOS. Monterey currently is unuseable. I am definitely suspecting the graphics card. Someone else asked if I got the drivers needed for the Nvidia card, I completely forgot that step. I will do what I can about that and then go to the AllRez to get the data we need to really figure this out. I might do allrez before drivers. I would hate causing a problem by messing up the add of the drives.

 

[joevt]

Is the output you are referring to from AllRez?

Yes. We can compare the output of AllRez on Catalina with the output of AllRez on Monterey to see how they differ.

I really would help to get on current OS, Sonama, not just Monterey. On Catalina, incompatibility is growing within my browsers, which require newer MacOS. Monterey currently is unuseable. I am definitely suspecting the graphics card. Someone else asked if I got the drivers needed for the Nvidia card, I completely forgot that step. I will do what I can about that and then go to the AllRez to get the data we need to really figure this out. I might do allrez before drivers. I would hate causing a problem by messing up the add of the drives.

Monterey was the last OS I used on my MacPro3,1 with GTX 680 Mac Edition. I used OCLP with its automatic patches including Kepler drivers.
I have a similar setup with an iMac14,2 but its running Sequoia and has a GTX 780M (also Kepler based). It works fine with OCLP.

 

[danallen]

Thank you for spelling our the configuration experience you have. Am I understanding correctly, using OCLP on a cMP with GTX 680 can be expected to automatically put in the drivers for the graphics card. I used Martin Lo's open core, the graphic card is terrible. Were you running 4K through that GTX 680 on Monterey?

 

[Borowski]

You should try OCLP for (re-)patching under Monterey, that should automatically detect the card and download the needed drivers, network connection is needed.

 

[danallen]

You should try OCLP for (re-)patching under Monterey, that should automatically detect the card and download the needed drivers, network connection is needed.

Thank you for taking time to respond.

I understand rebuild needed go get the graphics drivers setup, thanks to this thread.

Before doing that, I am wondering whether I will get 4K graphics from the properly patched system as you described. I have not come across anyone mentioning 4K graphics on their cMP on OC of any kind.

Have you?

 

[Borowski]

To my knowledge, GTX680 is 4K-capable: 4096x2160 at 60Hz supported over DisplayPort (hardware limitation).

As long as the driver supports the same resolution, it should work.

 

[joevt]

Thank you for spelling our the configuration experience you have. Am I understanding correctly, using OCLP on a cMP with GTX 680 can be expected to automatically put in the drivers for the graphics card. I used Martin Lo's open core, the graphic card is terrible. Were you running 4K through that GTX 680 on Monterey?

Hmm. I'm not sure. I don't have my MacPro3,1 anymore.
I have output from AllRez that shows 4K60 working in everything except Monterey.
[/code]
cd /Volumes/Work/Programming/XcodeProjects/Displays/AllRez
grep -lR "533.310MHz" .

./AllRez10.10x86_64_MacPro3,1-10.10.6-x86_64.txt
./AllRez10.11x86_64_MacPro3,1-10.11.6-x86_64.txt
./AllRez10.12x86_64_MacPro3,1-10.12.6-x86_64.txt
./AllRez10.12x86_64_MacPro3,1-10.7.5-x86_64.txt
./AllRez10.13x86_64_MacPro3,1-10.13.6-x86_64.txt
./AllRez10.14x86_64_MacPro3,1-10.14.6-x86_64.txt
./AllRez10.15x86_64_MacPro3,1-10.15.7-x86_64.txt
./AllRez10.5x86_64_Macmini8,1-13.2-x86_64.txt
./AllRez10.5x86_64_MacPro3,1-10.11.6-x86_64.txt
./AllRez10.5x86_64_MacPro3,1-13.1-x86_64.txt
./AllRez10.6x86_64_MacPro3,1-10.7.5-x86_64.txt
./AllRez10.6x86_64_MacPro3,1-13.1-x86_64.txt
./AllRez10.7x86_64_MacPro3,1-10.7.5-x86_64.txt
./AllRez10.7x86_64_MacPro3,1-10.7.5-x86_64_2.txt
./AllRez10.8x86_64_MacPro3,1-10.8.5-x86_64.txt
./AllRez10.9x86_64_MacPro3,1-10.9.5-x86_64.txt
./AllRez11x86_64_MacPro3,1-11.7.2-x86_64.txt
./AllRez13x86_64_MacPro3,1-10.10.6-x86_64.txt
./AllRez13x86_64_MacPro3,1-10.11.6-x86_64.txt
./AllRez13x86_64_MacPro3,1-10.12.6-x86_64.txt
./AllRez13x86_64_MacPro3,1-10.13.6-x86_64.txt
./AllRez13x86_64_MacPro3,1-10.14.6-x86_64.txt
./AllRez13x86_64_MacPro3,1-10.15.7-x86_64.txt
./AllRez13x86_64_MacPro3,1-10.8.5-x86_64.txt
./AllRez13x86_64_MacPro3,1-10.9.5-x86_64.txt
./AllRez13x86_64_MacPro3,1-11.7.2-x86_64.txt
./AllRez13x86_64_MacPro3,1-13.1-x86_64.txt
[/code]

4K30 works in all of the above plus these from Monterey:

grep -lR "262.750MHz" .

./AllRez10.5x86_64_MacPro3,1-12.6.2-x86_64.txt
./AllRez12x86_64_MacPro3,1-12.6.2-x86_64.txt
./AllRez13x86_64_MacPro3,1-12.6.2-x86_64.txt

AllRez13x86_64 means it was built in Ventura for Intel 64 bit.
12.6.2-x86_64 means it was running in Monterey Intel 64 bit.

I don't remember if I tried getting 4K60 to work in Monterey.
Maybe using Lilu and WhateverGreen patches could enable 4K60 in Monterey.

 

[Powerbooky]

I still have my MacPro 3,1 in active use: it has a GTX780 running on a 4K ultra wide screen monitor.
The machine did run Big Sur for a year or two. Never tried Monterey because I didn't see any benefits at the time. A few months ago I wanted to try an upgrade and tried Ventura, Sonoma and Sequoia.

To make a long story short, I stayed at Ventura. In the last couple of years OCLP has definitely improved on the graphics drivers. I used to run Big Sur for a while and even though it did work rather smoothly sometimes it did show some graphics glitches. There was an issue where I just could not get HDMI audio working. Eventually I got that solved by a clean install of Ventura.

On the graphics side, the current OCLP version does have good Nvidia drivers. The GTX780 works very smooth with Ventura and i assume the 680 probably will work too. While I hardly play any games anymore, I did try Asphalt 8 from Apple Arcade and to my surprise it does run very fast at full 4K resolution.
I haven't seen any big issues with web browsers. The only minor issue is that Safari doesn't allow 4K on Youtube for some reason. But for that I use Firefox, Vivaldi or Brave instead.


Unfortunately I could not use Sonoma and Sequoia. They both broke the wifi and bluetooth support - I got the 802.11ac/bluetooth 4.x module. Sonoma could have worked up to version 14.3.1 but isn't available for download anymore. Wifi and bluetooth are completely wrecked in both Sonoma and Sequoia. AirPlay doesn't work, even with wired ethernet. The Apple Music app crashes whenever I touch the AirPlay button.

Only Ventura works fine for me, with one exception. After version 13.6.x bluetooth has frequent disconnects making it unusable for my wireless mouse and keyboard. I had to do a workaround by using Logitech's USB dongle on the USB3.1 port (I have a Sonnet USB3 PCI card installed).