Patch for newer BIOS

[ghost]

Hi, i have Elitebook 840 G4 and same issue with newer Bios that won´t boot. Can you tell me how you fixed it to run newer BIOS. Thanks

[kecinzer]

New BIOS causes this in DSDT RTC device:

Device (RTC) { Name (_HID, EisaId ("PNP0B00") /* AT Real-Time Clock */) // _HID: Hardware ID Name (_CRS, ResourceTemplate () // _CRS: Current Resource Settings { IO (Decode16, 0x0070, // Range Minimum 0x0070, // Range Maximum 0x01, // Alignment 0x02, // Length ) IRQNoFlags () {8} }) Method (_STA, 0, NotSerialized) // _STA: Status { If ((STAS == One)) { Return (0x0F) } Else { Return (Zero) } } }

We need to return 0x0F.
This can be fixed by ACPI rename or better way - by SSDT file. You can look at my repository.
kecinzer/hpelitebook850g5-opencore@65338fe

[ghost]

Hi, this worked great, i used ACPI rename method, could you help me patching my ssdt? i have no idea what to do? i attached my opencore ACPI Folder
ACPI.zip

[kecinzer]

I think you just need that aml file from commit that I linked from my repo.
As from you ACPI I can see that you use very old files.

[ghost]

you mean this file? kecinzer/hpelitebook850g5-opencore@65338fe#diff-bc3b0c9ff89ab25292012e33f8def7992c2658aafcce6edf62bbaa893ffdbd9c

[ghost]

EFI/OC/ACPI/SSDT-SET-STAS.aml???

[ghost]

ok i added it, if you want to have a look, this is my repo https://github.com/DominikHackintosh/HP-EliteBook-840-G4-Hackintosh-Big-Sur/tree/master/EFI/OC

[ghost]

thank you it is really perfect!!!!

[sinzii]

New BIOS causes this in DSDT RTC device:

Device (RTC) { Name (_HID, EisaId ("PNP0B00") /* AT Real-Time Clock */) // _HID: Hardware ID Name (_CRS, ResourceTemplate () // _CRS: Current Resource Settings { IO (Decode16, 0x0070, // Range Minimum 0x0070, // Range Maximum 0x01, // Alignment 0x02, // Length ) IRQNoFlags () {8} }) Method (_STA, 0, NotSerialized) // _STA: Status { If ((STAS == One)) { Return (0x0F) } Else { Return (Zero) } } }

We need to return 0x0F.
This can be fixed by ACPI rename or better way - by SSDT file. You can look at my repository.
kecinzer/hpelitebook850g5-opencore@65338fe

Hey can I fix the issue using this method for the CLOVER EFI?