Ubuntu 20.04 LTS Intel Wi-Fi 6E AX210 Driver doesn't work after update

Question

This issue returned after updating Ubuntu and it can't be fixed by the working solution of renaming/removing pnvm file anymore as mentioned in following solutions. How to fix it now?

Intel Wifi 6 AX210 - WiFi not working after Update

https://bugzilla.kernel.org/show_bug.cgi?id=212371#c13

$ sudo modprobe iwlwifi && sudo dmesg | grep iwl

Log is here https://pastebin.com/SBhH0mh5

gamepc:~$ ls -l /usr/lib/firmware | grep pnvm
-rw-r--r--  1 root root   41804 Mar 10 07:05 iwlwifi-so-a0-gf-a0.pnvm

Renaming/deleting iwlwifi-so-a0-gf-a0.pnvm doesn't solve the issue.

$ lsmod | grep iwlwifi
iwlwifi               372736  1 iwlmvm
cfg80211              888832  3 iwlmvm,iwlwifi,mac80211
$ inxi -n
Network:   Device-1: Intel driver: igc 
           IF: enp3s0 state: up speed: 1000 Mbps duplex: full mac: d8:bb:c1:8a:56:3c 
           Device-2: Intel driver: iwlwifi
gamepc:~$ uname -r
5.13.0-39-generic
gamepc:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 20.04.4 LTS
Release:    20.04
Codename:   focal
gamepc:~$ sudo dpkg -s linux-firmware | grep -i version
Version: 1.187.29
gamepc:~$ sudo lshw -C network
  -network

       description: Ethernet interface
       product: Intel Corporation
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: enp3s0
       version: 03
       serial: d8:bb:c1:8a:56:3c
       size: 1Gbit/s
       capacity: 1Gbit/s
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi msix pciexpress bus_master cap_list ethernet physical 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=igc driverversion=5.13.0-39-generic duplex=full firmware=1079:8770 ip=192.168.0.56 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
       resources: irq:17 memory:51b00000-51bfffff memory:51c00000-51c03fff
  -network
       description: Network controller
       product: Intel Corporation
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:04:00.0
       version: 1a
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix bus_master cap_list
       configuration: driver=iwlwifi latency=0
       resources: irq:18 memory:52000000-52003fff
$ dkms status
backport-iwlwifi, 8324: added
nvidia, 510.47.03, 5.13.0-37-generic, x86_64: installed
nvidia, 510.47.03, 5.13.0-39-generic, x86_64: installed

Answer 1

I notice that there is a later version of the firmware is available. I also suspect that your -63 version may be corrupted. Let's download fresh copies.

With a working internet connection by ethernet, tethering or whatever means possible, open a terminal and do:

cd /usr/lib/firmware/
sudo wget https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/iwlwifi-ty-a0-gf-a0-63.ucode
sudo wget https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/iwlwifi-ty-a0-gf-a0-66.ucode

Reboot and show us:

sudo dmesg | grep iwl

Answer 2

We have to modify your copy of backport-iwlwifi-dkms (8324-0ubuntu3~20.04.4) to work with your newer kernel (5.13.0-39-generic). This newer kernel got installed with a recent Software Update.

Note: Secure Boot must be disabled in your BIOS.

This dkms status output shows us that backport-iwlwifi was never working on your system:

backport-iwlwifi, 8324: added
nvidia, 510.47.03, 5.13.0-37-generic, x86_64: installed
nvidia, 510.47.03, 5.13.0-39-generic, x86_64: installed

So we have to modify it.

sudo -H gedit /usr/src/backport-iwlwifi-8324/dkms.conf

At the top of the file you'll see:

PACKAGE_NAME="backport-iwlwifi"
PACKAGE_VERSION="8324"
AUTOINSTALL="yes"
BUILD_EXCLUSIVE_KERNEL="^((5\.[0-3]($|[.-]))|(4\.))"

The BUILD_EXCLUSIVE_KERNEL limits it's use to an earlier kernel from 20.04.

Comment out this line by placing a "#" at the front of that line:

#BUILD_EXCLUSIVE_KERNEL="^((5\.[0-3]($|[.-]))|(4\.))"

Save the file. Then do:

sudo dkms build backport-iwlwifi/8324

Note: If the build fails, it'll probably be because you're missing a linux header file. Go ahead and install the missing file, and redo the build command.

sudo dkms install backport-iwlwifi/8324

dkms status should now show:

backport-iwlwifi, 8324, 5.13.0-39-generic, x86_64: installed
nvidia, 510.47.03, 5.13.0-37-generic, x86_64: installed
nvidia, 510.47.03, 5.13.0-39-generic, x86_64: installed

Reboot and retest your wireless.

Note: If it's still not working, we'll have to get the newer backport-iwlwifi-dkms (9340-0ubuntu4) at https://packages.ubuntu.com/impish/backport-iwlwifi-dkms.

dkms status should now show:

backport-iwlwifi, 9340, 5.13.0-39-generic, x86_64: installed
nvidia, 510.47.03, 5.13.0-37-generic, x86_64: installed
nvidia, 510.47.03, 5.13.0-39-generic, x86_64: installed

Update #1:

MSI Z690 Carbon WIFI DDR5: ATX w/USB3.2, 5x M.2
BIOS version 1.21
CPU Intel® Core™ i9-12900K

There's a BIOS update for your i9 at https://www.msi.com/Motherboard/MPG-Z690-CARBON-WIFI/support.

Note: confirm that I have the correct web page for your motherboard

Note: do backups before updating the BIOS

Update the BIOS. Retest wifi. Report back.

Update #2:

We tried with a modified backport-iwlwifi-dkms from focal, and a standard impish version with no luck. We tried -67 ucode with no luck.

BIOS has been updated to support i9 processor.

Kernel 5.13.0-37-generic, wifi doesn't work.

Kernel 5.13.0-39-generic, wifi doesn't work.

Kernel 5.11.0-27-generic, wifi works fine.

Run with kernel 5.11.0-27-generic until a kernel > -39 is released, and then retest wifi.