Not working with MSI B550-A Pro

[BlackCatCowboy]

System

• Motherboard: MSI B550-A Pro
• BIOS Version: 7C56vAI1
• GPU: MSI RTX 2080ti Ventus
• CSM is turned off.
• 4G decoding is enabled. Make sure to confirm this in the BIOS and not with GPU-Z or similar since it can be inaccurate
• UEFIPatch is applied (see Using UEFIPatch for more information). On some motherboards DSDT Patching is also needed
• I have read Common issues (and fixes)

Description

Hi there! First off, thanks so much for undertaking this project and providing support for it, it is much appreciated. I have put in the NVStraps rebar driver to my BIOS via UEFI tool. I attempted the UEFIPatch step, but got the "no patches could be applied" message, so proceded to the DSDT step as per the Rebaruefi wiki. My setup doesn't fall into any of the categories for DSDT patching, so I skipped this too.

NVstrapsrebar detects the DXE driver fine, however when I autoconfigure with E key and reboot, it will say:

"GPU-side ReBAR Configured without PCI confirm (0x0400000000000082)
(use Overide BAR Size Mask option)
Target PCI BAR size: 0 / System default"

Following this, I hit O and then save to enable override for BAR size mask. After I reboot, I still get the same message as above, so I hit P and try to configure BAR size this way. I have tried all options in the P menu, but rebar remains undetected by GPU-Z and nvidia-smi -q -d memory. I tried this with the previous bios revision, however the results are the same. Thanks for taking the time to read this.