GPU VRAM stuck at 31mb on Kaby Lake R UHD 620 graphics card.

MarkHP

New member
Joined
Jun 26, 2021
Motherboard
HP Spectre x360 - 13-ae097na
CPU
Intel® Core™ i7-8550U Processor
Graphics
Intel® UHD Graphics 620
OS X/macOS
11.0.x
Bootloader
  1. OpenCore
Mobile Phone
  1. iOS
Hi,
I have an HP Spectre x360 13" with Intel Core i7 8550u, UHD 620 and a 4k internal display. I tried several frame buffer patches and followed a lot of guides and turns out that the os boots with just 2 combinations of AAPL but the VRAM is 31MB. You cannot change the DVMT Pre Allocated space in bios since hp doesn't allow that. I'm using Opencore 0.7.0 with macOS Big Sur 11.4. Does anyone know the correct framebuffer patches or how to change DVMT Pre Aloc size?
 

EliteMacx86

Administrator
Staff member
Joined
Jul 22, 2018
Motherboard
Supermicro X11SPA-T
CPU
Intel Xeon W-3275 28 Core
Graphics
2xAMD RX 580 8GB
OS X/macOS
11.0.x
Bootloader
  1. OpenCore
Mac
  1. MacBook Pro
Mobile Phone
  1. Android
  2. iOS
Hi,
I have an HP Spectre x360 13" with Intel Core i7 8550u, UHD 620 and a 4k internal display. I tried several frame buffer patches and followed a lot of guides and turns out that the os boots with just 2 combinations of AAPL but the VRAM is 31MB. You cannot change the DVMT Pre Allocated space in bios since hp doesn't allow that. I'm using Opencore 0.7.0 with macOS Big Sur 11.4. Does anyone know the correct framebuffer patches or how to change DVMT Pre Aloc size?

 
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