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AppleALC only work on fast boot clover?

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Hello, I'm trying to use AppleALC (VodooHDA works, but I don't want to use this one, since the AppleALC give me better sound quality).


I tried both ways: using the Wiki of AppleALC GitHub, and the Olaria easy way of MaLd0n. Non works for me.


However, the AppleALC work for me when I use alcid=11 and fast boot:



Do you know how to fix this? Since I dual boot Catalina and High Sierra, it's a bit inconvenient for me to use fast boot. Thank you and good day.



OS: Catalina 10.15.3

CPU: Intel Core i7-8665U Processor (1.90GHz GHz 8MB)

GPU: NVIDIA Quadro P520 2 GB GDDR5/ intel UHD 620

RAM: 16.0GB PC4-19200 DDR4 Soldered 2400MHz


Motherboard/Laptop model: Intel Coffee Lake-U/Y PCH rev. 30/ Thinkpad P53s

BIOS: Lenovo version 1.60 (12/30/2019)

Screen: 15.6 "FHD IPS AntiGlare LED Backlight 1920x1080

Ethernet Card: Intel I219-LM

Wifi/BT Card: Wireless Intel AC adapter 9560 2x2ac with BT5.0 (will be replaced soon)

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