Reset NVRAM/PRAM on Intel Mac
To reset the chip let bong twice when resetting! This sound fix the connection errors! Sometime heat can play havoc with ports on Intel Macs over the years!
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Pro Display XDR - Owners Thread
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To reset the chip let bong twice when resetting! This sound fix the connection errors! Sometime heat can play havoc with ports on Intel Macs over the years!
Well, that's great. And at the same time I don't understand why I do not get 6K on 2080 Ti
It exists in EDID (in extra section) if I use Titan-Ridge, but not available at all. And what's more interesting, when I use USB-C, it doesn't.
Ok, I also tried to re-arrange extra section in EDID and made 6K as the first option. It appeared in Windows settings, but I got black screen when tried it. OR it works, but renders 6K through 5K frame buffer, so it's not an option either.
What version of Windows you use? Mine is 10 2004 as I remember.
Did you flash Titan Ridge to allow dual HBR3? It's not supposed to work oob without flashing.
How do I check in Windows if the XDR is connected using DSC or not? I'd like to compare the DSC status between the Belkin cable to the GPU (6K60 HDR) and the USB-C/TB3 cable to the Titan Ridge (5K maximum). Thanks.
I made AllRez for Intel Macs which can dump lots of macOS display related info including DisplayPort DPCD registers which contains the DSC info.
I don't know of a good utility that can show that info in Windows.
I suppose someone could port the DPCD stuff to Windows after figuring out how to read from the DisplayPort AUX channel. The same needs to be done for Apple Silicon Macs. Basically, DPCD is a 1MB blob of hex and my code just decodes the blob. My code only reads 16 byte blocks from DPCD that contain bytes that it knows how to decode.
GPU-Z on Windows has an Advanced tab which shows some DisplayPort info (link rate and number of lanes) for some GPUs.
I think you should try comparing EDID between Belkin cable to GPU and Thunderbolt cable to Titan Ridge.
And then try Belkin cable to Titan Ridge (with appropriate USB-C to DisplayPort cable for Thunderbolt port; but also you can try the DisplayPort output of the Titan Ridge).
I was able to lookup the EDIDs in the Windows registry.
APPAE22 <- XDR connected to Titan Ridge USB-C port (USB-C cable)
APPAE2D <- XDR connected to RTX 4090 graphics card DP port (Belkin cable)
The location in the registry is HKLM\SYSTEM\CurrentControlSet\Enum\DISPLAY. Under that location, I tried to delete the APPAE22 key, then export the APPAE2D key, then edit the exported file and change the occurrences of APPAE2D to APPAE22, then save and import back into the registry. At this point, I had the two keys APPAE22 and APPAE2D in the registry, except that now the key ending in 22 had a copy of the contents of the one ending in 2D. I was hoping to trick Windows that way. Then I connected the XDR to the Titan Ridge, and it made no difference (5K maximum). I rebooted, and still only 5K resolution through the Titan Ridge.
I tried to investigate with the following programs: Deltacast E-EDID Editor, Custom Resolution Utility (CRU) and GPU-Z. I will provide a more comprehensive report on those, with screenshots. But long story short, I still can't get 6K through the Titan Ridge.
@etc, what is the revision of your Titan Ridge card? Mine is rev. 1.0. I'm considering purchasing a rev. 2.0 and trying it. 🤷♂️ But if yours is already a rev. 2.0, then it's probably not worth it.
@joevt, thanks for your insight so far.
AE2D has all the modes (1440p, 4K, 5K, 6K) single tile. It has 5 total EDID blocks. 6K is specified as native in the 3rd block (with additional 6K modes in the last block).
AE22 has all the modes (1440p, 4K, 5K, 6K) single tile plus some dual tile modes for 5K (since the Thunderbolt connection allows for two DisplayPort connections) except that the tile topology says the tiles are 3008x3384 and there are no modes for the 3008x3384 tiles...
It is a larger EDID with 6 total blocks. 6K is specified as native in the 3rd block but there are no 6K modes until the last block.
I would check to make sure all the blocks for each EDID are being read (each block is 128 bytes).
Maybe the GPU drivers have a problem with the size of the EDIDs. I would send a report to the manufacturer. You can get sample Apple Pro Display XDR EDIDs from the edid-decode project.
In the case of Thunderbolt, if you were using a Thunderbolt add-in card, or a motherboard that had two external DisplayPort inputs, then maybe you could disconnect one to force a single DisplayPort connection.
Regarding regedit, Instead of doing it manually, I would let CRU do it. It adds EDID overrides to RegEdit for you. You can export or copy an EDID then paste it into the active connection. Each EDID override is per GPU port and display. So if you change the port that the display is connected to, then you need to redo the override. When editing the EDID, change the display name to indicate what GPU/port/display you are using. You'll know when the EDID is being used when you see the modified display name in the Windows UI.
Mine is 2.0. And I just bought Z590 Vision D with Maple Ridge onboard. No changes, still 5K maximum via TB port, no matter which cable you use - USB-C or TB3.
Has anyone recently ordered the Pro XDR Display and Pro Stand? I ordered the screen with VESA mount the end of November and the screen shipped and arrived right away. The VESA mount just stayed on "processing order" until I eventually cancelled it and ordered the Pro Stand instead on December 2nd.
Apple's website said the Pro Stand would ship in 2-4 days, and I even paid for expedited shipping with an estimated time of arrival between December 8-12. This morning I woke up with an update from Apple saying that the Pro Stand won't be delivered until December 15-19.
Is anyone else experiencing this kind of delay?
Apple's website said the Pro Stand would ship in 2-4 days, and I even paid for expedited shipping with an estimated time of arrival between December 8-12. This morning I woke up with an update from Apple saying that the Pro Stand won't be delivered until December 15-19.
Is anyone else experiencing this kind of delay?
If only it were that easy. I'm in Canada; most places here don't stock this screen or stand.
B&H would get it to me in 2 days, message me if u need me to get it and send it your way
That's very kind of you, and I appreciate your offer. I'm hoping it will ship this week from Apple. If not, I may be in touch. Thanks again.
Good news: Dell 0WYY76 (also sunix UPD2018 and similar) addon card (USB-C with DisplayPort) allows you to connect XDR display to PC with a graphics card that supports DSC to get full 6K@10bpc resolution with controllable brightness, color profiles & usb devices (at 2.0 speed though).
It was already discussed here https://forums.macrumors.com/thread...-the-gigabyte-titan-ridge-add-in-card.2209947
I just want to confirm that it works with XDR under Windows. In macOS I got upscaled from 4K to 5K resolution with RX580, which actually does not support DSC. When I get DSC-capable card, I'll check this again. I hope I won't need to mess around Thunderbolt, because it seemed to be a dead end.
It was already discussed here https://forums.macrumors.com/thread...-the-gigabyte-titan-ridge-add-in-card.2209947
I just want to confirm that it works with XDR under Windows. In macOS I got upscaled from 4K to 5K resolution with RX580, which actually does not support DSC. When I get DSC-capable card, I'll check this again. I hope I won't need to mess around Thunderbolt, because it seemed to be a dead end.
I'm using a Pro Art X670E, which has a JHL 8540 Maple Ridge controller. Using the iGPU, the TB4 port works at full 6k60 at 10bpc with true Thunderbolt speeds (AFAIK). However, when I provide the DP-IN pass through from the RTX 4090 to the Motherboard, the screen goes black. I've Chrome Remote Desktop'ed into the PC when the screen is black, and the Display is connected at 6k60...but with 6bpc, which I don't think the Pro XDR Display supports (maybe that's why the screen is black).
Any suggestions?
In the mean time, I've been using Windows's feature of setting the dGPU on a per-app basis. However, the 7950x's iGPU is pretty weak -- even default animations in Windows 11 are laggy, and there's no way to have the dGPU run the desktop (I've tried).
XDR should support 6bpc
https://forums.macrumors.com/thread...titan-ridge-add-in-card.2209947/post-28191609
Actually, I'm not sure it's possible for a DisplayPort display to not support 6 bpc.