faby1992

yes i know, but with the previous DSDT is more or less as high sierra, with this i have to wait 5 second to open finder, something not working correctly. I tried also with a new generated ssdt but not change ?

Whit this boot is fine, sleep continues to work, shutdown no and pc remains very slow

This is the file saved with ioreg https://easyupload.io/f2xist EDIT: Whit this dsdt the pc seems really slow, but sleep works

Done, thanks in advance for your help! https://easyupload.io/b5o0pm

My Lenovo X220 with Catalina 10.15.4 works pretty well but shutdown results in a reboot and instantly wake up from sleep. If I disable Wireless card on bios (DW1510) the problem disappear. If I enable "Wake for network access" in Energy Saver and AC power is plugged in, the sleep works. I think the problem is something about power management but I didn't find a solution ? EFI and kext are the same of this repository: https://github.com/x-t/x220-catalina-efi