Wifi stopped working on Dell XPS 13 9300

[LCID Fire]

One of the recent updates to focal stopped WiFi working at all. Before it was already VERY flakey and did often not work after suspends but now it does not work at all anymore.
Following the output when loading iwlwifi:

[ 5.012281] iwlwifi 0000:00:14.3: enabling device (0000 -> 0002)
[ 5.026016] iwlwifi 0000:00:14.3: Direct firmware load for iwlwifi-Qu-c0-hr-b0-56.ucode failed with error -2
[ 5.031496] iwlwifi 0000:00:14.3: api flags index 2 larger than supported by driver
[ 5.031515] iwlwifi 0000:00:14.3: TLV_FW_FSEQ_VERSION: FSEQ Version: 65.3.35.22
[ 5.031522] iwlwifi 0000:00:14.3: Found debug destination: EXTERNAL_DRAM
[ 5.031524] iwlwifi 0000:00:14.3: Found debug configuration: 0
[ 5.031944] iwlwifi 0000:00:14.3: loaded firmware version 55.d9698065.0 Qu-c0-hr-b0-55.ucode op_mode iwlmvm
[ 5.031979] iwlwifi 0000:00:14.3: Direct firmware load for iwl-debug-yoyo.bin failed with error -2
[ 5.104631] iwlwifi 0000:00:14.3: Detected Killer(R) Wi-Fi 6 AX1650i 160MHz Wireless Network Adapter (201NGW), REV=0x338
[ 5.181794] iwlwifi 0000:00:14.3: Microcode SW error detected. Restarting 0x0.
[ 5.181891] iwlwifi 0000:00:14.3: Loaded firmware version: 55.d9698065.0 Qu-c0-hr-b0-55.ucode
[ 5.181893] iwlwifi 0000:00:14.3: 0x00000000 | ADVANCED_SYSASSERT
[ 5.181894] iwlwifi 0000:00:14.3: 0x00000000 | trm_hw_status0
[ 5.181895] iwlwifi 0000:00:14.3: 0x00000000 | trm_hw_status1
[ 5.181896] iwlwifi 0000:00:14.3: 0x00000000 | branchlink2
[ 5.181897] iwlwifi 0000:00:14.3: 0x00000000 | interruptlink1
[ 5.181898] iwlwifi 0000:00:14.3: 0x00000000 | interruptlink2
[ 5.181899] iwlwifi 0000:00:14.3: 0x00000000 | data1
[ 5.181900] iwlwifi 0000:00:14.3: 0x00000000 | data2
[ 5.181901] iwlwifi 0000:00:14.3: 0x00000000 | data3
[ 5.181902] iwlwifi 0000:00:14.3: 0x00000000 | beacon time
[ 5.181903] iwlwifi 0000:00:14.3: 0x00000000 | tsf low
[ 5.181904] iwlwifi 0000:00:14.3: 0x00000000 | tsf hi
[ 5.181905] iwlwifi 0000:00:14.3: 0x00000000 | time gp1
[ 5.181906] iwlwifi 0000:00:14.3: 0x00000000 | time gp2
[ 5.181908] iwlwifi 0000:00:14.3: 0x00000000 | uCode revision type
[ 5.181909] iwlwifi 0000:00:14.3: 0x00000000 | uCode version major
[ 5.181910] iwlwifi 0000:00:14.3: 0x00000000 | uCode version minor
[ 5.181911] iwlwifi 0000:00:14.3: 0x00000000 | hw version
[ 5.181912] iwlwifi 0000:00:14.3: 0x00000000 | board version
[ 5.181913] iwlwifi 0000:00:14.3: 0x00000000 | hcmd
[ 5.181914] iwlwifi 0000:00:14.3: 0x00000000 | isr0
[ 5.181915] iwlwifi 0000:00:14.3: 0x00000000 | isr1
[ 5.181916] iwlwifi 0000:00:14.3: 0x00000000 | isr2
[ 5.181917] iwlwifi 0000:00:14.3: 0x00000000 | isr3
[ 5.181918] iwlwifi 0000:00:14.3: 0x00000000 | isr4
[ 5.181919] iwlwifi 0000:00:14.3: 0x00000000 | last cmd Id
[ 5.181920] iwlwifi 0000:00:14.3: 0x00000000 | wait_event
[ 5.181921] iwlwifi 0000:00:14.3: 0x00000000 | l2p_control
[ 5.181922] iwlwifi 0000:00:14.3: 0x00000000 | l2p_duration
[ 5.181923] iwlwifi 0000:00:14.3: 0x00000000 | l2p_mhvalid
[ 5.181924] iwlwifi 0000:00:14.3: 0x00000000 | l2p_addr_match
[ 5.181925] iwlwifi 0000:00:14.3: 0x00000000 | lmpm_pmg_sel
[ 5.181926] iwlwifi 0000:00:14.3: 0x00000000 | timestamp
[ 5.181927] iwlwifi 0000:00:14.3: 0x00000000 | flow_handler
[ 5.181972] iwlwifi 0000:00:14.3: Start IWL Error Log Dump:
[ 5.181973] iwlwifi 0000:00:14.3: Status: 0x00000000, count: 7
[ 5.181975] iwlwifi 0000:00:14.3: 0x20000315 | ADVANCED_SYSASSERT
[ 5.181976] iwlwifi 0000:00:14.3: 0x00000000 | umac branchlink1
[ 5.181977] iwlwifi 0000:00:14.3: 0x80465D2E | umac branchlink2
[ 5.181978] iwlwifi 0000:00:14.3: 0xC00866EC | umac interruptlink1
[ 5.181979] iwlwifi 0000:00:14.3: 0x00000000 | umac interruptlink2
[ 5.181980] iwlwifi 0000:00:14.3: 0x00000001 | umac data1
[ 5.181981] iwlwifi 0000:00:14.3: 0x0030AB38 | umac data2
[ 5.181982] iwlwifi 0000:00:14.3: 0x00000000 | umac data3
[ 5.181983] iwlwifi 0000:00:14.3: 0x00000037 | umac major
[ 5.181984] iwlwifi 0000:00:14.3: 0xD9698065 | umac minor
[ 5.181985] iwlwifi 0000:00:14.3: 0x0000C59E | frame pointer
[ 5.181986] iwlwifi 0000:00:14.3: 0xC0887F30 | stack pointer
[ 5.181988] iwlwifi 0000:00:14.3: 0x00000000 | last host cmd
[ 5.181989] iwlwifi 0000:00:14.3: 0x00100029 | isr status reg
[ 5.182008] iwlwifi 0000:00:14.3: Fseq Registers:
[ 5.182011] iwlwifi 0000:00:14.3: 0x60000000 | FSEQ_ERROR_CODE
[ 5.182034] iwlwifi 0000:00:14.3: 0x80290033 | FSEQ_TOP_INIT_VERSION
[ 5.182037] iwlwifi 0000:00:14.3: 0x00090006 | FSEQ_CNVIO_INIT_VERSION
[ 5.182058] iwlwifi 0000:00:14.3: 0x0000A481 | FSEQ_OTP_VERSION
[ 5.182061] iwlwifi 0000:00:14.3: 0x00000003 | FSEQ_TOP_CONTENT_VERSION
[ 5.182065] iwlwifi 0000:00:14.3: 0x4552414E | FSEQ_ALIVE_TOKEN
[ 5.182068] iwlwifi 0000:00:14.3: 0x02000300 | FSEQ_CNVI_ID
[ 5.182071] iwlwifi 0000:00:14.3: 0x01300504 | FSEQ_CNVR_ID
[ 5.182074] iwlwifi 0000:00:14.3: 0x02000300 | CNVI_AUX_MISC_CHIP
[ 5.182079] iwlwifi 0000:00:14.3: 0x01300504 | CNVR_AUX_MISC_CHIP
[ 5.182084] iwlwifi 0000:00:14.3: 0x05B0905B | CNVR_SCU_SD_REGS_SD_REG_DIG_DCDC_VTRIM
[ 5.182108] iwlwifi 0000:00:14.3: 0x0000025B | CNVR_SCU_SD_REGS_SD_REG_ACTIVE_VDIG_MIRROR
[ 5.182155] iwlwifi 0000:00:14.3: SecBoot CPU1 Status: 0x5a35, CPU2 Status: 0x3
[ 5.182183] iwlwifi 0000:00:14.3: UMAC PC: 0x80480994
[ 5.182193] iwlwifi 0000:00:14.3: LMAC PC: 0x1641a
[ 5.182195] iwlwifi 0000:00:14.3: Failed to start RT ucode: -5
[ 5.194358] iwlwifi 0000:00:14.3: Failed to run INIT ucode: -5

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.8.0-50-generic 5.8.0-50.56~20.04.1
ProcVersionSignature: Ubuntu 5.8.0-50.56~20.04.1-generic 5.8.18
Uname: Linux 5.8.0-50-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.16
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Sat May 1 15:32:04 2021
InstallationDate: Installed on 2020-08-26 (247 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
SourcePackage: linux-signed-hwe-5.8
UpgradeStatus: No upgrade log present (probably fresh install)