Thank you for your help. Sapphire RX 590 GME, its interface is 2x HDMI 2.0b and 2x DisplayPort 1.4a, no DVI. I tried flashing the VBIOS of a Sapphire RX 580 compatible with Samsung K4G80325FC. However, it seems that it is not stable enough. After DDU uninstalls and reinstalls the AMD driver, the black screen appears when running 3DMark TimeSpy, the fan speed is very high, and the noise is loud. Moreover, when CSM is turned off (that is, UEFI Boot only) and the power button is pressed, the monitor remains black until entering the system desktop. I learned from GOOGLE that this phenomenon is caused by the imperfect UEFI boot function of the AMD graphics card. Moreover, after trying to use the GOPup tool to update the GOP modularity, the problem is still not solved.
By using WinHEX software to compare the BIOS of the original Sapphire RX 590 GME and the VBIOS of the Sapphire RX 580 of Samsung K4G80325FC, I found that the difference between the GOP modules of the two is only the Device Id. This confuses me. Is there any way to solve the problem of black screen before entering the desktop during UEFI boot?
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