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@Feartech Thanks. I leave it as it is. not critical. Any thoughts on the other stuff?

Hello, I need some support optimizing my Laptop. 1. Looking at the Systemreport two Types of PCI have no drivers installed: a) Signal Processing Controller and b) System Periphal both can be seen at the attached PCI.png picture 2. Airdrop is not working and not shown inside the Finder...

Solved as well. Issue was only that I had to set DisableIOMapper to false instead of true. Moving for the rest to Monterey, as I updated.

Thanks for the support. Boots in Big Sur so far. As enable-hdmi20 is not supported in Big Sur, I had to enable-max-pixel-clock-overide in DeviceProperties. The Nvidia was only disabled in ACPI with GPUoff, not inside DeviceProperties. Macbookpro14,1 set to I7. So Thunderbolt port is working...

I can confirm that device-id -> 16590000 AAPL,GfxYTile MacBookPro14,1 work fine on High Sierra. Nonetheless all fail on booting Big Sur. As enable-hdmi20 does not work on BigSur (read it somewhere) is there an alternative ? Any idea what else to try?

Hello, I struggle setting up Big Sur with my Thinkpad. I am able to boot with a fakeCPU 12345678. I limited the settings in Device Properties. When I remove enable-hdmi20 the setup will not boot in High Sierra or Catalina as well. Attached more technical data about GPU and Audio.