Enabling SLI on Pop_OS! causes black screen on startup

I have an issue where enabling SLI causes me to have a black screen on startup

When I check the logs I notice the below:

[    19.482] (II) NVIDIA(GPU-0): NVIDIA SLI enabled.
[    19.483] (EE) NVIDIA(GPU-0): Failed to select a display subsystem.
[    19.483] (EE) NVIDIA(GPU-0): Only one GPU will be used for this X screen.
[    19.483] (EE) NVIDIA(GPU-0): The NVIDIA graphics device PCI:1:0:0 is part of an active SLI
[    19.483] (EE) NVIDIA(GPU-0):     configuration and is currently unavailable for single GPU
[    19.483] (EE) NVIDIA(GPU-0):     rendering.  Please see Chapter 30: Configuring SLI and
[    19.483] (EE) NVIDIA(GPU-0):     Multi-GPU FrameRendering in the README for troubleshooting
[    19.483] (EE) NVIDIA(GPU-0):     information.
[    19.483] (EE)  *** Aborting ***
[    19.483] (EE) NVIDIA(0): Failing initialization of X screen

Not sure why it mentions in that log it is unavailable for single GPU rendering and can’t seem to find where that is set.

The settings for my xorg.conf display are as below:

Section "Monitor"
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "Unknown"
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BusID          "PCI:1:0:0"
EndSection

Section "Device"
    Identifier     "Device1"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BusID          "PCI:8:0:0"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "SLI" "On"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

I have tried connecting to all DP/HDMI ports on both cards but not the DVI ports as I do not have the cables so not sure if that would be the issue?

Any help appreciated
nvidia-bug-report.log.gz (530 KB)