Public bug reported:

I am running Ubuntu 20.04.3:

$ lsb_release -rd
Description:    Ubuntu 20.04.3 LTS
Release:        20.04

I am running Ubuntu on a Lenovo ThinkPad P14s with Intel Wi-Fi 6 AX210 Wi-Fi 
interface. This used to work up to kernel 5.11.0-46 (which loaded iwlwifi 
"firmware version 59.601f3a66.0 ty-a0-gf-a0-59.ucode op_mode iwlmvm").
Recently, Ubuntu auto-upgraded my kernel to first version 5.13.0-25 and then 
5.13.0-27. Both of these kernel versions load iwlwifi "firmware version 
63.c04f3485.0 ty-a0-gf-a0-63.ucode op_mode iwlmvm" and then my Wi-Fi interface 
no longer works.
This is the error output from `dmesg` when running kernel 5.13.0-25:

[   68.475159] iwlwifi 0000:09:00.0: enabling device (0000 -> 0002)
[   68.488513] iwlwifi 0000:09:00.0: api flags index 2 larger than supported by 
driver
[   68.488533] iwlwifi 0000:09:00.0: TLV_FW_FSEQ_VERSION: FSEQ Version: 0.0.2.25
[   68.489009] iwlwifi 0000:09:00.0: loaded firmware version 63.c04f3485.0 
ty-a0-gf-a0-63.ucode op_mode iwlmvm
[   68.623466] iwlwifi 0000:09:00.0: Detected Intel(R) Wi-Fi 6 AX210 160MHz, 
REV=0x420
[   68.803885] iwlwifi 0000:09:00.0: Microcode SW error detected. Restarting 
0x0.
[   68.803996] iwlwifi 0000:09:00.0: Start IWL Error Log Dump:
[   68.803999] iwlwifi 0000:09:00.0: Status: 0x00000040, count: 6
[   68.804001] iwlwifi 0000:09:00.0: Loaded firmware version: 63.c04f3485.0 
ty-a0-gf-a0-63.ucode
[   68.804003] iwlwifi 0000:09:00.0: 0x00000071 | NMI_INTERRUPT_UMAC_FATAL    
[   68.804006] iwlwifi 0000:09:00.0: 0x002002F0 | trm_hw_status0
[   68.804008] iwlwifi 0000:09:00.0: 0x00000000 | trm_hw_status1
[   68.804009] iwlwifi 0000:09:00.0: 0x004DA004 | branchlink2
[   68.804011] iwlwifi 0000:09:00.0: 0x004D07EA | interruptlink1
[   68.804012] iwlwifi 0000:09:00.0: 0x004D07EA | interruptlink2
[   68.804014] iwlwifi 0000:09:00.0: 0x004D8DEA | data1
[   68.804016] iwlwifi 0000:09:00.0: 0x00000010 | data2
[   68.804017] iwlwifi 0000:09:00.0: 0x00000000 | data3
[   68.804019] iwlwifi 0000:09:00.0: 0x00000000 | beacon time
[   68.804020] iwlwifi 0000:09:00.0: 0x00013757 | tsf low
[   68.804022] iwlwifi 0000:09:00.0: 0x00000000 | tsf hi
[   68.804023] iwlwifi 0000:09:00.0: 0x00000000 | time gp1
[   68.804025] iwlwifi 0000:09:00.0: 0x0002859D | time gp2
[   68.804027] iwlwifi 0000:09:00.0: 0x00000001 | uCode revision type
[   68.804028] iwlwifi 0000:09:00.0: 0x0000003F | uCode version major
[   68.804030] iwlwifi 0000:09:00.0: 0xC04F3485 | uCode version minor
[   68.804032] iwlwifi 0000:09:00.0: 0x00000420 | hw version
[   68.804033] iwlwifi 0000:09:00.0: 0x00489002 | board version
[   68.804035] iwlwifi 0000:09:00.0: 0x8008FF00 | hcmd
[   68.804036] iwlwifi 0000:09:00.0: 0x00020000 | isr0
[   68.804038] iwlwifi 0000:09:00.0: 0x60000000 | isr1
[   68.804040] iwlwifi 0000:09:00.0: 0x58F00002 | isr2
[   68.804041] iwlwifi 0000:09:00.0: 0x00C0000C | isr3
[   68.804043] iwlwifi 0000:09:00.0: 0x00000000 | isr4
[   68.804045] iwlwifi 0000:09:00.0: 0x00000000 | last cmd Id
[   68.804046] iwlwifi 0000:09:00.0: 0x004D8DEA | wait_event
[   68.804048] iwlwifi 0000:09:00.0: 0x00000000 | l2p_control
[   68.804050] iwlwifi 0000:09:00.0: 0x00000000 | l2p_duration
[   68.804051] iwlwifi 0000:09:00.0: 0x00000000 | l2p_mhvalid
[   68.804053] iwlwifi 0000:09:00.0: 0x00000000 | l2p_addr_match
[   68.804054] iwlwifi 0000:09:00.0: 0x00000009 | lmpm_pmg_sel
[   68.804056] iwlwifi 0000:09:00.0: 0x00000000 | timestamp
[   68.804058] iwlwifi 0000:09:00.0: 0x00000024 | flow_handler
[   68.804112] iwlwifi 0000:09:00.0: Start IWL Error Log Dump:
[   68.804113] iwlwifi 0000:09:00.0: Status: 0x00000040, count: 7
[   68.804115] iwlwifi 0000:09:00.0: 0x2010070D | ADVANCED_SYSASSERT
[   68.804117] iwlwifi 0000:09:00.0: 0x00000000 | umac branchlink1
[   68.804118] iwlwifi 0000:09:00.0: 0x8045CF40 | umac branchlink2
[   68.804120] iwlwifi 0000:09:00.0: 0x0108E0B2 | umac interruptlink1
[   68.804122] iwlwifi 0000:09:00.0: 0x00000000 | umac interruptlink2
[   68.804124] iwlwifi 0000:09:00.0: 0x00000005 | umac data1
[   68.804125] iwlwifi 0000:09:00.0: 0xDEADBEEF | umac data2
[   68.804127] iwlwifi 0000:09:00.0: 0xDEADBEEF | umac data3
[   68.804128] iwlwifi 0000:09:00.0: 0x0000003F | umac major
[   68.804130] iwlwifi 0000:09:00.0: 0xC04F3485 | umac minor
[   68.804132] iwlwifi 0000:09:00.0: 0x00028596 | frame pointer
[   68.804133] iwlwifi 0000:09:00.0: 0xC0885E90 | stack pointer
[   68.804135] iwlwifi 0000:09:00.0: 0x00010C00 | last host cmd
[   68.804137] iwlwifi 0000:09:00.0: 0x00000000 | isr status reg
[   68.804165] iwlwifi 0000:09:00.0: IML/ROM dump:
[   68.804166] iwlwifi 0000:09:00.0: 0x00000B03 | IML/ROM error/state
[   68.804185] iwlwifi 0000:09:00.0: 0x000086A0 | IML/ROM data1
[   68.804197] iwlwifi 0000:09:00.0: 0x00000080 | IML/ROM WFPM_AUTH_KEY_0
[   68.804204] iwlwifi 0000:09:00.0: Fseq Registers:
[   68.804216] iwlwifi 0000:09:00.0: 0x20000000 | FSEQ_ERROR_CODE
[   68.804228] iwlwifi 0000:09:00.0: 0x80440002 | FSEQ_TOP_INIT_VERSION
[   68.804240] iwlwifi 0000:09:00.0: 0x00080009 | FSEQ_CNVIO_INIT_VERSION
[   68.804252] iwlwifi 0000:09:00.0: 0x0000A652 | FSEQ_OTP_VERSION
[   68.804264] iwlwifi 0000:09:00.0: 0x00000002 | FSEQ_TOP_CONTENT_VERSION
[   68.804276] iwlwifi 0000:09:00.0: 0x4552414E | FSEQ_ALIVE_TOKEN
[   68.804288] iwlwifi 0000:09:00.0: 0x00400410 | FSEQ_CNVI_ID
[   68.804300] iwlwifi 0000:09:00.0: 0x00400410 | FSEQ_CNVR_ID
[   68.804312] iwlwifi 0000:09:00.0: 0x00400410 | CNVI_AUX_MISC_CHIP
[   68.804326] iwlwifi 0000:09:00.0: 0x00400410 | CNVR_AUX_MISC_CHIP
[   68.804340] iwlwifi 0000:09:00.0: 0x00009061 | 
CNVR_SCU_SD_REGS_SD_REG_DIG_DCDC_VTRIM
[   68.804354] iwlwifi 0000:09:00.0: 0x00000061 | 
CNVR_SCU_SD_REGS_SD_REG_ACTIVE_VDIG_MIRROR
[   68.804370] iwlwifi 0000:09:00.0: WRT: Collecting data: ini trigger 13 fired 
(delay=0ms).
[   69.743608] iwlwifi 0000:09:00.0: Failed to run INIT ucode: -5

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.13.0-27-generic 5.13.0-27.29~20.04.1
ProcVersionSignature: Ubuntu 5.11.0-46.51~20.04.1-generic 5.11.22
Uname: Linux 5.11.0-46-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.21
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Fri Jan 21 12:01:43 2022
InstallationDate: Installed on 2021-10-11 (102 days ago)
InstallationMedia: Ubuntu 20.04.3 LTS "Focal Fossa" - Release amd64 (20210819)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=da_DK.UTF-8
 SHELL=/bin/bash
SourcePackage: linux-signed-hwe-5.13
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: linux-signed-hwe-5.13 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug focal

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https://bugs.launchpad.net/bugs/1958639

Title:
  Intel WiFi 6 AX210 hardware stops working

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