MP 7,1 Dell UP3218K 8K Monitor on Mac Pro 2019?

[joevt]

New development. Wonder if this helps?

• Single display up to 8K @ 30Hz or 8K @ greater than 30Hz with DSC

OWC launches new ‘Thunderbolt to Dual DisplayPort Adapter’ for Mac - 9to5Mac

The folks at OWC are out with a new accessory today that could prove useful for Mac users. The new...

9to5mac.com

OWC Thunderbolt (USB-C) Dual DisplayPort Adapter

Easily add 4K, 5K, or 8K displays to your computer and enjoy stunning lifelike images, increased productivity, and enhanced gaming.

eshop.macsales.com

EDIT: My bad, just remembered DSC isn't supported on the Dell. Ignore.

Right. This is just a USB-C to DisplayPort adapter except it's Thunderbolt so it can do two DisplayPort signals. It doesn't add DSC. DSC comes from the GPU, not the adapter. The adapter takes two DisplayPort connections from the GPU, each up to HBR2 x4, or one HBR3 x4 and one HBR x4.
The interesting thing about the OWC adapter is that the Thunderbolt cable is detachable. The similar adapter I have is https://www.amazon.com/dp/B07S8W49T1

What you need is an adapter that takes one GPU DisplayPort 1.4 connection with DSC (up to 8K60) and converts it to two DisplayPort 1.4 signals for the UP3218K.
The kind of circuitry needed for this is probably something like the display driver boards that people use to create 5K displays
https://forums.macrumors.com/threads/diy-5k-monitor-success.2253100/post-30255292
https://forums.macrumors.com/threads/8k-or-8k4k-display-support-in-macos.2221938/post-30068514

Such an adapter could eliminate issues with dual tile displays (macOS doesn't support arbitrary dual tile displays, only 4K MST, 5K2K, 5K, 6K) and it reduces the number of DisplayPort connections from a GPU so you could connect twice as many dual tile displays.

There's a series of videos about DisplayPort 1.4 on Intel FPGA. I don't know if it's powerful enough to take 8K60 (HBR3 x4 + DSC) and do two outputs (8K/2 60Hz). It's probably super expensive to create. There's probably other alternatives that are also expensive.

 

[driftwood2]

Works for me. Dell 8K in Action on Mac Pro 7,1 and ResXtreme. 60Hz 8K! I would upload the 8K desktop but this site doesn't allow such large images! Ensure you use both DP cables. Thats it.

 

[joevt]

Works for me. Dell 8K in Action on Mac Pro 7,1 and ResXtreme. 60Hz 8K! I would upload the 8K desktop but this site doesn't allow such large images! Ensure you use both DP cables. Thats it.

View attachment 1860921

A screenshot wouldn't confirm it anyway. I can get 16Kx16K screenshots with my eGPU.
Need output from AGDCDiagnose to confirm because macOS does not report the output resolution or output pixel format - it only reports the framebuffer resolution and the framebuffer pixel format.

Can you replace your Graphics/Displays screenshot with one that shows the entire window? First adjust the size of the window to the minimum size that will include all info. Then type Command-Shift-4. Press spacebar to switch to window capture mode. Then click the window.

 

[Pressure]

I finally got 8K @ 60Hz working in Catalina 10.15.7 on the Dell UP3218K.

I simply had to run a script called one-key-hidpi (GitHub).

1. Run the script and pick "Enable HiDPI (with patch)" and under resolution config write: 3840x4320
2. Reboot
3. Then start SwitchResX and 1920x2160@60Hz HiDPI should be available for both parts of the screen
4. Under System Preferences -> Mission Control be sure to uncheck "Displays have separate spaces"
5. Cut an 8K wallpaper in half for completion for each screen

 

[mattspace]

I finally got 8K @ 60Hz working in Catalina 10.15.7 on the Dell UP3218K.

I simply had to run a script called one-key-hidpi (GitHub).

1. Run the script and pick "Enable HiDPI (with patch)" and under resolution config write: 3840x4320
2. Reboot
3. Then start SwitchResX and 1920x2160@60Hz HiDPI should be available for both parts of the screen
4. Under System Preferences -> Mission Control be sure to uncheck "Displays have separate spaces"
5. Cut an 8K wallpaper in half for completion for each screen

so... is your mac treating it like you have 2 separate portrait displays? does the menubar only exist on one side of the display?

 

[Pressure]

so... is your mac treating it like you have 2 separate portrait displays? does the menubar only exist on one side of the display?

Yes it does, the alternative is 30Hz so far. Applications can stretch over both sides, so it's not really a big issue.

I have the menubar auto hide anyway and the dock is on the left side.

We just have to come to terms with that Apple just doesn't care about monitors except their own $4,999.00 one.

 

[mattspace]

Yes it does, the alternative is 30Hz so far. Applications can stretch over both sides, so it's not really a big issue.

I have the menubar auto hide anyway and the dock is on the left side.

We just have to come to terms with that Apple just doesn't care about monitors except their own $4,999.00 one.

yeah, No doubt when Apple has a ~40" 8K display to offer, we'll see 8K as a UI resolution, rather than just an output for a video monitor.

BTW for your situation, check out Menuwhere - puts the full system menu in a floating palette under your mouse pointer on a chosen click / keyboard shortcut.

 

[kayasoze]

Unfortunately the one-key-hidpi recipe doesn’t appear to work in macOS Monterey.

 

[Lee2111]

I finally got 8K @ 60Hz working in Catalina 10.15.7 on the Dell UP3218K.

I simply had to run a script called one-key-hidpi (GitHub).

1. Run the script and pick "Enable HiDPI (with patch)" and under resolution config write: 3840x4320
2. Reboot
3. Then start SwitchResX and 1920x2160@60Hz HiDPI should be available for both parts of the screen
4. Under System Preferences -> Mission Control be sure to uncheck "Displays have separate spaces"
5. Cut an 8K wallpaper in half for completion for each screen

View attachment 1865120 View attachment 1865131 View attachment 1865141

Thanks for the info 👍 what cables are you using?

Would you mind posting a picture of your desktop, to see how it looks? Thanks

 

[hardwickj]

This may be an option worth trying, for anyone who actually has this monitor on hand:

GitHub - waydabber/BetterDisplay: Unlock your displays on your Mac! Flexible HiDPI scaling, XDR/HDR extra brightness, virtual screens, DDC control, extra dimming, PIP/streaming, EDID override and lots more!

Unlock your displays on your Mac! Flexible HiDPI scaling, XDR/HDR extra brightness, virtual screens, DDC control, extra dimming, PIP/streaming, EDID override and lots more! - waydabber/BetterDisplay

github.com

 

[hardwickj]

Follow up, from the developer of BetterDummy:

Would this allow the Dell UP3218K monitor to work at 8k@60hz? · waydabber BetterDisplay · Discussion #199

The Dell UP3218K is the only 8k computer monitor on the market at the moment. Unfortunately, the only connectivity it offers is 2xDisplayPort 1.4 without DSC, with each cable comprising half of the...

github.com

He seems to think it could work!

 

[joevt]

Dell UP3218K 8K60 support in Ventura for Mac Pro 2019:
https://forums.macrumors.com/thread...-on-mac-pro-yes-you-can.2309750/post-31245498