- Joined
- Feb 18, 2018
- Messages
- 786
- Motherboard
- Gigabyte TRX40 Aorus Xtreme
- CPU
- Ryzen 3970X
- Graphics
- RX 6900 XT
- Mac
- Classic Mac
- Mobile Phone
Ah, so it is 19H15, later than 19H4. Not showing up here in the UK yet.
I am not a member of Apple Developer Program and yet I received this, which indicates that the Release Candidate is also a public testing release...
Have you connected the power switch of your case?I apologize for what might be slightly off topic, but I'm desperate. I ordered the parts on page 1 (except a I7 10700) and have have been trying to assemble them. Right now I'm at the stage with the cpu, 1 stick m2 storage, 1 memory stick. When I hook up the power, I get a brief flash and nothing else. I've swaped motherboards, cpus, power supplies, M2 storage and memory DIMM. No difference. What am I doing wrong?
(for reference, I had no trouble building the flash drive for doing the install, but obviously I cant do that until I can get something to turn on.)
And yes I tried googling for this issue and got nowhere...
Update: The screenshots show you're using iMac20,2. Please try switching to iMacPro1,1 for a few days and disable the Device Property for iGPU as shown:
View attachment 494019
ran earlier with no issues - took about 15mins.Did anyone install Catalina 10.15.7 Supplemental Update released earlier today?
It could be me. I have similar issues sometimes at startup. Have not figured out what it is. I have switchresx installed so I simply change the resolution and back. For instance, when this happens I am on 4k 60hz. I change to 4k 30hz, screen is back to normal then I change back to 4k 60hz.At least one other person encountered this problem, but I don't recall the solution or workaround. Let's see if we can troubleshoot it here, and if successful, I'll add it to Post 1.
- What is the make/model of your monitor?
- Are you connecting via HDMI or DisplayPort cable?
- Was macOS installed from scratch, or was an existing macOS SSD transplanted into this system?
- What is the make/model of your RX 5700 XT?
- If there's a "Factory Reset" option on the monitor itself (via its on-board menu), have you tried a factory reset?
- What system name are you using? iMac19,1 or iMac20,2?
- If nothing else works, please try SwitchResX from here. There's a trial period, and a license is quite inexpensive. If you need help with SwitchResX, just ask.
Is Automatic Login enabled?It could be me. I have similar issues sometimes at startup. Have not figured out what it is. I have switchresx installed so I simply change the resolution and back. For instance, when this happens I am on 4k 60hz. I change to 4k 30hz, screen is back to normal then I change back to 4k 60hz.
Here it is.Please run IORegistryExplorer --> File --> Save As... as post the saved file. That will show us the Thunderbolt configuration.