I believe you are indeed getting full 5K via two DisplayPort streams! The log looks identical to that of the MacBook Pro:
View attachment 423054 View attachment 423055
Some questions:
- Which motherboard are you using?
- Are you getting 5K with the Thunderbolt header connected (THB_C)?
- Have you tried disconnecting the Thunderbolt header?
- I know you're asking others to try it without the header, but have you personally attempted it?
- With the THB_C header connected, do the FaceTime camera, speakers, microphone, and USB ports work?
- You are specifically selecting the Orinoco frame buffer in Clover Configurator and you have Inject Intel check on?
- ASUS PRIME Z370-A
- Yes
- Yes, more on this below
- Yes, yes, yes and yes!
- I had initially set Orinoco framebuffer with no Inject Intel (with headless iGPU setup) as several guides were suggesting it, but after deleting it the default auto-selected framebuffer gets me much more fluid UI (switched back a while ago). Sorry for offtopic!
Initially I had the GC-Alpine Ridge card working on Designare without Thunderbolt header, but it wasn't reliable at all. First, it wasn't working and I started thinking the card is defective. Suddenly, it started working, but after each successful boot, second boot was getting completely stuck on initial BIOS screen when connected devices are listed. This made me wonder if I can power the card externally for stable boots. I chased down a powered PCIe riser card (photo attached) which are commonly used in mining farms, but also I saw several eGPU guides using them for Thunderbolt-only screens. After some more testing I couldn't get the card working on the new motherboard without the Thunderbolt header, with or without the riser. On some eGPU forums I've read there is significant delay that can take many minutes before the card starts working this way, here is
one I could find (link):
initiation period might be several minutes. One time it took nearly 10 minutes.
I wonder if it's just me or it's generally an unreliable solution to use a Thunderbolt card without a Thunderbolt header on the motherboard.
@kolyasapphire thanks so much for writing back. I'm on the same boat as you. But, since I don't have any hardware, yet, I'm just trying to find out people using this display and see what are their results. I already posted and contacted with a few users on other forums.
May I ask if you got 5k res without Whatevergreen, is there any other problems in the rig? Everything works? wake, sleep, cam, mic, speakers, etc.? Performance drop?
Also, have you tried disconnecting the TB3 header?
No problem! The only annoyance is that without WhateverGreen boot time is much longer, but I'll sacrifice it for 5K any day
Can't tell anything about sleep / wake as I started from a minimal config, yet to find out. Haven't noticed any performance degradation, but potentially performance can be even better because the display is configured properly and no scaling is happening, but much more experienced people here can say for sure.
BTW! I found a tutorial on how to get 5k on the LG a few weeks ago and at one part it says this
Maybe this is old advice already but just wanted to share, or do not applies to you as you use another GPU.
Also he says to go to Windows and update the firmware of the TB3 card, as well as the firmware on the LG by using the App store mac app.
I've sent a message to this person to see his output from the diagnose command but he never replied me back, so can't assure he's really running at 5k. Ping me on private and I will share the link to his blog.
The screen is showing the latest FW version and I didn't see any GC-Alpine Ridge rev 2 updates (only for first version).
I actually just remembered that WhateverGreen fixed the quicklook functionality among other things
I think it's
this kext(link), I'll look into what it does aside from disabling the board-id check, thanks!
