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BIOS dump

If you're an NVMe user make sure to disable SATA mode using BIOS GUI, otherwise you may experience issues

Manual way

After extracting my bios using this guide I've applied a few changes about CFG Lock status and DVMT. If you're interested in BIOS settings, look at Section_PE32_image_Setup.txt

I've changed the following offsets via modGRUBShell.efi:

PLEASE DOUBLE CHECK THE OFFSETS

  • Above 4G to Disabled using setup_var 0x7ED 0x00 (there's no sense of having it enabled, so double check if it's enabled or not)

Above 4G offset

  • CFG Lock to Disabled using setup_var 0x527 0x00

CFG Lock offset

  • CSM Support to Disabled using setup_var 0x104A 0x00

CSM Support offset

  • DVMT Pre-allocated to 64M using setup_var 0x7E8 0x2

DVMT Pre-allocated offset

  • DVMT Total Gfx Mem to MAX using setup_var 0x7E9 0x3

DVMT Total Gfx Mem offset

  • Serial Port to Disabled using setup_var 0x1272 0x00

Serial Port offset

  • SW Guard Extension to Disabled using setup_var 0x5DC 0x00

SW Guard Extension offset

  • TPM State to Disabled using setup_var 0xF7A 0x00

TPM State offset

  • XHCI Hand-off to Enabled using setup_var_cv UsbSupport 0x1B 0x1 0x01

XHCI Hand-off offset

Automatic way (more or less)

In the Automatic folder, there's a UEFI NSH script called bios.nsh. Think of it like a .sh or a .bat script which runs in UEFI shell environment.

What you gotta do is:

  1. Take a spare thumb drive
  2. Format it in GUID FAT-32 (or MS-DOS FAT if you're in macOS environments)
  3. Copy the whole content of the Automatic folder and make sure you have the following tree:
|── EFI
│   └── BOOT
│       └── BOOTx64.efi
├── bios.nsh
└── setup_var.efi

Please note that BOOTx64.efi is simply OpenShell.efi renamed in order to automatically run from the BIOS boot menu. Please note that setup_var.efi is took from datasone/setup_var.efi. All credits goes to him for this fantastic tool

  1. Locate your thumb drive FSx: (usually should be FS1:)
  2. Run bios.nsh and enjoy

Conclusions

In this way, you won't need more:

  • framebuffer-fbmem and framebuffer-stolenmem properties under DeviceProperties for the graphics patch
  • ReleaseUsbOwnership under UEFI/Quirks :)