Hadi12355

@tommyluco

 

So could you finally get your uhd 620 to work with acceleration on bigsur?

Thanx for your reply!
Yes I know, I just disabled these settings with the #, so I can boot again!
Meanwhile I disabled the ACPI patches you've marked and disabled XHCIPortLimit because I've read, I don't need it since Big Sur 11.3 anymore...
My EFI:
https://drive.google.com/file/d/1HPXwUtQz5yucipWT2zBIMBDwZsGGe9Ef/view?usp=sharing
When I enable the iGPU settings I get this error:

 

 

Dear members. Is there anybody out there, who got a Latitude 7400 2-in-1 to work properly with full GPU acceleration on Big Sur?
As far I tried all kinds of settings, EFIs as well as I tried to generate my own from sample on. No luck.
I got the Installer running with an Olarila image and could install Big sur 11.4.
Somehow I found a EFI, which allows my trackpad, touchscreen, audio even the Intel WIFI card to work quite properly - as far tested.
I tried different SMBIOS with different framebuffers, device-ids on and on.

 

I updated and modified my BIOS (1.11.0) to unlock my CSR with:

setup_var 0x6ED 0x00

and set PreAllocated and total allocated settings with:

setup_var 0xA10 0x2
setup_var 0xA11 0x2

Actually I can work on my Laptop but I have no acceleration - only 7MB and my HDMI is not working - not built-in hdmi and not a usb-c -> hdmi dongle (but LAN over this dongle works though). That sucks, cause I need my monitor for work - my eyes are not the best!!

My spec are: DELL Latitude 7400 2-in-1 (5WRVH) with 16GB RAM, Whiskey Lake i7-8665U with UHD 620 GPU and Full HD display
My only modification is a Samsung MZ-V7E1T0BW 970 EVO 1 TB NVMe M.2 instead of the original NVMe shipped with the laptop.

 

I've spent allredy over 4 weeks trying and trying....
I attach my EFI folder and ask anybody who can give me a hint or send me his EFI plz!!!!
Also can give a reward somehow for your spent time!

My EFI:
https://drive.google.com/file/d/1RdjLpXOpBMcKNLkLAaMLCBfa87I-ocul/view?usp=sharing