acidanthera/OpenCorePkg 0.7.7 on GitHub

Fixed rare crash caused by register corruption in the entry point
Added ProvideCurrentCpuInfo support for Intel Alder Lake
Fixed typo in Cpuid1Data recommendations for Intel Rocket Lake and newer
Updated builtin firmware versions for SMBIOS and the rest
Updated underlying EDK II package to edk2-stable202111
Resolved crashes in QEMU with AudioDxe
Added AudioDxe settings caching (avoids non-needed setup delays)
Added DisconnectHda quirk to allow UEFI sound on Apple hardware and others
Added workarounds for bugs in QEMU intel-hda driver to allow UEFI sound in QEMU
Implemented multi-channel (e.g. bass+main speaker; speakers+headphones) UEFI sound with AudioOutMask
Fixed AudioDxe startup stalls when Nvidia HDA audio is present
Resolved AudioDxe disabling sound in Windows on some firmware
Added pointer polling period tuning in the builtin AppleEvent implementation
Added pointer device list tuning in the builtin AppleEvent implementation
Added VREF handling to support UEFI sound on more Apple hardware
Updated audio output channel detection to support UEFI sound on more Apple hardware
Added manual GPIO config (use --gpio-setup AudioDxe driver argument for UEFI sound on Apple hardware)
Switched UEFI audio levels to decibel gain to allow accurate matching of saved macOS volume levels
Separated settings for minimum audio assist volume and minimum audible volume