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Can't get both 4k60hz and hdmi audio work on nuc7i5bnh.

Joined
Feb 16, 2021
Messages
6
Motherboard
nuc7i5bnh
CPU
i5 7260U
Graphics
Intel Iris Plus Graphics 640
Mobile Phone
  1. Android
After installing Catalina on my Nuc7, HDMI audio doesn't work, so I need to specify IGPU and fake sound card ID, but if I do so I will lose my 4K60Hz. What should I do?
4k30hz-png.509504
4k60hz-png.509507
 
Joined
Feb 16, 2021
Messages
6
Motherboard
nuc7i5bnh
CPU
i5 7260U
Graphics
Intel Iris Plus Graphics 640
Mobile Phone
  1. Android
I do not need to specify the igpu model or device-id to use 4k60hz, but if I specify iris plus 640, which is the model I currently using, it will be limited to 4k30hz. please help me.
 
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