Hi folks, Myself Building image for ADL-P DDR4 RVP, by using coreboot 4.21 & Mrchromebox EDK-II as a UEFI payload. By default, RVP don't have a *"libgfxinit" *support *in coreboot *but with the help of Mrchromebox i have integrated the *"libgfxinit" support.*
from make menuconfig->> under devices ->> Graphic Initialization -> libgfxinit Vbt ->> extracted Vbt file from the Stock BIOS
with the above config, I am able to see the BIOS Menu only on *uart console* However, on External Monitor (HDMI display) appeared with blank screen (No backlight) I inspected the debug log and it says "*HW.GFX.EDID.Sanitize: EDID header pattern mismatch!".*
Debug logs: https://pastebin.com/Y8y78Xv1
kindly please advise the solution for this issue.. Thanks in advance..