The HD4400 does not work properly at 2K resolution

inan999

New member
Joined
Jul 22, 2022
Messages
1
Motherboard
thinkpad x1c gen2
CPU
i5 4300u
Graphics
HD4400
OS X/macOS
11.0.x
Bootloader
  1. OpenCore
Mac
  1. MacBook Pro
Mobile Phone
  1. Other
Hey team EliteMacx86,
I installed Mac OS Big Sur in my laptop (Thinkpad x1c gen2), but,i have some questions for hd4400.
My monitor resolution is 2560x1440, but It can't work at this resolution, the monitor will blink, only works 2048x1152.
I try to change AAPL,ig-platform-id "0000160A",it works in 2k not blink, but QE/CI is not normal, only use "0600260A" QE/CI works normal
i Don't know why?
Here`s my config,
Thanks in advance!!!!
 

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  • Config.zip
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EliteMacx86

Administrator
Staff member
Joined
Jul 22, 2018
Messages
3,611
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. Mac mini
  2. MacBook Pro
Mobile Phone
  1. Android
  2. iOS
Hey team EliteMacx86,
I installed Mac OS Big Sur in my laptop (Thinkpad x1c gen2), but,i have some questions for hd4400.
My monitor resolution is 2560x1440, but It can't work at this resolution, the monitor will blink, only works 2048x1152.
I try to change AAPL,ig-platform-id "0000160A",it works in 2k not blink, but QE/CI is not normal, only use "0600260A" QE/CI works normal
i Don't know why?
Here`s my config,
Thanks in advance!!!!
4K/UHD/QHD/QHD+ Displays have additional requirements.

Read here

If your BIOS does not have an option to change the DVMT Pre-alloc, you need to modify the DVMT using Shell method as described in the thread linked below.

For Insyde BIOSes
 

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