Intel AX200 Drivers Ubuntu

# run this to determine which firmware the kernal is looking for
modinfo iwlwifi | grep iwlwifi-cc

# example output:
# firmware:       iwlwifi-cc-a0-50.ucode

# go https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/ and download the firmware

# copy file to /lib/firmware
sudo cp ~/Download/iwlwifi-cc-a0-50.ucode /lib/firmware

# reboot
sudo reboot

# check that firmware was loaded
sudo dmesg | grep iwlwifi | grep version

# example output
# [    4.566709] iwlwifi 0000:05:00.0: loaded firmware version 50.3e391d3e.0 op_mode iwlmvm

No, your method is outdated. Ax200 has been supported since the kernel 5.1+. When you use ubuntu 20.04, it supports ax200 certainly. The main problem you can't use the wifi could be the fast start up of win10. I disable it, then I solve the problem. All in all, thanks for your idea.

Diable fast startup in BIOS, and boot Windows 10, then restart, enter Ubuntu 20.04, solved.

here is my 2 cents to this issue, till now this is still an issue, @zinwalin is right, also add in an tip, if you do a fresh install and not seeing your wifi, don't stress, you need to go into windows at less 1x then reboot, then your wifi will appear, i wish someone had told me that, i figure this out like 3 days later lol

I want to add my case on this issue, maybe it helps somebody in the future.

So I have dual boot Ubuntu 20.04 and Windows. Have been switching from one to another without any problem for several weeks (or maybe just that I don't know the issue exist, since usually I used LAN cable rather than wifi).

So one day after booting win10, I boot to ubuntu to notice that the wifi is missing and the wifi tab on setting are also dissapeared.
Panicked, I boot back into win10 for a hardware sanity check to find out that wifi on win10 work perfectly (so not a hardware issue, right?).
But then I restart the pc and back to ubuntu, the wifi is still missing!

I used dual boot so long that I'm aware to ALWAYS turn of the Fast Startup in BIOS, so at my case, the Fast Startup option is already turned off since first installed this dual boot system. Honestly at first I'm not sure with the @zinwalin and @jason-shen solution.

After reading this page, I give it a go. Restart to win10 until the desktop shows, then restart back to ubuntu. Bam! The wifi works again lol.

I didn't do anything related to the kernel/module/etc. No terminal command issued. Just restart.

Still wondering why this works. But I'm happy now!