You need to install AppleALC.kext and lilu.kext
https://github.com/vit9696/AppleALC/releases
https://github.com/vit9696/Lilu/releases
You should install (inject) those kexts in your
/Volumes/EFI/EFI/CLOVER/kexts/Other/ folder. Of course you should mount your EFI partition first with
https://www.tonymacx86.com/resources/efi-mounter-v3.280/
Then place these patches "SSDT-HDEF-HDAS-1.aml,SSDT-HDMI-HD630.aml"
in this folder
/Volumes/EFI/EFI/CLOVER/ACPI/patched/
You should also inject the ig-platform-id . Patch the conectors from DisplayPort or whatever to HDMI type connectors. You do that in your clover's config.plist file. Attached pertinent settings in the config.plist sample file. I hope that helps