did anyone manage to get a working wifi under Linux?
No matter if Manjaro, Ubuntu or any other distribution?
Please share your Uefi-setting.
Kernel has the the drivers, but cannot activate the hardware, as there are some features not active in the wifi-hardwares firmware, which the kernel likes to work with. At least that is how it seems.
I got wifi working in EndeavorOS, based on Arch-linux. This method should also work on Manjaro. All you need to do is build the following package from AUR: AUR (en) - iwlwifi-ax101-dkms. Bluetooth still doesn’t work, by the way.
Perhaps there are also versions of this fix for Debian/Ubuntu, but I don’t have those installed at the moment. Good luck!