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<< Solved >> SMBIOS - iMac19,1 RX580 dual display Catalina

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Joined
Feb 24, 2019
Messages
35
Motherboard
Asus ROG Z390 MAXIMUS XI CODE
CPU
i9-9900K
Graphics
RX 580
Mac
  1. MacBook Air
Hello! I've a question. Here is my hardware list:

Intel Core i9-9900K, 3.6GHz, 16MB
Asus ROG Z390 MAXIMUS XI CODE
SSD Samsung 970 PRO 512GB PCIe x4 NVMe
SSD Samsung 850 Pro
sapphire Radeon RX 580 NITRO+ 8GB
Noctua NH-D15
SeaSonic Prime Platinum 1300W
Ballistix Ballistix Sport LT, DDR4, 32 GB,3200MHz, CL16

I updated OS to Catalina. When i set SMBIOS to iMac19,1 only monitor via HDMI works.. The second one (main) via DisplayPort doesn't work.

Any ideas how to resolve it?
Here is my config.
 

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Joined
Feb 24, 2019
Messages
35
Motherboard
Asus ROG Z390 MAXIMUS XI CODE
CPU
i9-9900K
Graphics
RX 580
Mac
  1. MacBook Air
Joined
May 5, 2019
Messages
20
Motherboard
ASUS Z370A
CPU
i7-8700k
Graphics
RX580 Nitro+
I see you (@power911) use the same graphic card as I do.

Could you please report what power usage and temperature you see in your system when they have settled in at idle usage?

See

 
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