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hi Feartech, i have a new problem. the sound in the headphone is not clear, very noisy. my audio is alc298. any guidance to fix it? solved after following: Fixing audio and Supported codecs test results: perfect by setting alcid = 22 or 29

Enable-cfl-backlight-fix removed. Now brightness control working perfect. Thank you so much!

i am now using opencore and have a BCM94352HMB Wireless LAN Adapter replaced the original one. however, the brightness control is still not working. the brightness cannot change when i adjust it. i have whatevergreen.kext put in my kext folder and SSDT-PNLF.aml in my ACPI folder. i don't know...

I am using opencore now. if you want it, i can send you my efi folder (opencore)

thanks very much! the brightness keys is working. I think my problem is about the brightness control. the brightness doesn't change when I adjust the brightness.

Opencore Catalina installed successfully in my X270. Brightness, Fn Keys not working. cannot adjust the brightness, does anyone know how to fix it?

Thanks a lot! AppleVLC patched in the website you mentioned (http://www.insanelymac.com/forum/topic/311293-applealc-—-dynamic-applehda-patching/?p=2520064) also works fine for me.

Really thanks a lot! -Wi-Fi: now working fine (use a USB Wireless Network card) -Backlight: followed the method using AppleBacklightInjector.kext, but not working perfectly (can only adjust to the brightest or the darkest level)

I am also new to the hackintosh. Thanks to Rehabman and now I have setup the latest High Sierra to my Lenovo x270 (Intel i7-7500u, Intel HD620 Graphics). Almost everything works fine but here is still one problem I cannot deal with: -cannot adjust the brightness Can anyone help me? By the way...