iwlwifi broken for Killer Wi-Fi 6 AX1650i with 5.4/20.04

[Loïc Minier]

Hi there,

Laptop: Dell XPS 13 7390 2-in-1
Built-in wireless: Killer Wi-Fi 6 AX1650i 160MHz

iwlwifi worked fine with 19.10 but breaks when upgrading to 20.04. Firmware crashes after loading and interface doesn't show up.

This is with:
linux-image-5.4.0-9-generic 5.4.0-9.12
linux-firmware 1.184

I've noticed the driver was trying to load a more recent firmware:
Direct firmware load for iwlwifi-Qu-b0-hr-b0-50.ucode failed with error -2

I've downloaded this file from upstream iwlwifi firmware git and tried unloading/reloading iwlwifi. Driver crashes as well, but with a different error code.

Best,
- LM

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-9-generic 5.4.0-9.12
ProcVersionSignature: Ubuntu 5.4.0-9.12-generic 5.4.3
Uname: Linux 5.4.0-9-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu15
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: lool 1579 F.... pulseaudio
 /dev/snd/pcmC0D0p: lool 1579 F...m pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Sat Jan 11 15:02:08 2020
InstallationDate: Installed on 2019-12-02 (39 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
MachineType: Dell Inc. XPS 13 7390 2-in-1
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-9-generic root=UUID=854f3bc2-da3a-4a3c-82a1-6b04a932bb29 ro pcie_aspm=off plymouth.force-scale=3 quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-5.4.0-9-generic N/A
 linux-backports-modules-5.4.0-9-generic N/A
 linux-firmware 1.184
RfKill:
 0: hci0: Bluetooth
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux
UpgradeStatus: Upgraded to focal on 2020-01-11 (0 days ago)
dmi.bios.date: 11/10/2019
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.1.3
dmi.board.name: 06CDVY
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 31
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.1.3:bd11/10/2019:svnDellInc.:pnXPS1373902-in-1:pvr:rvnDellInc.:rn06CDVY:rvrA00:cvnDellInc.:ct31:cvr:
dmi.product.family: XPS
dmi.product.name: XPS 13 7390 2-in-1
dmi.product.sku: 08B0
dmi.sys.vendor: Dell Inc.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This change was made by a bot.

[You-Sheng Yang (vicamo)]

Please have mainline kernel build a try: https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.5-rc6/

[Loïc Minier (lool)]

Tried with:
linux-image-unsigned-5.5.0-050500rc6-generic_5.5.0-050500rc6.202001122031_amd64.deb
linux-modules-5.5.0-050500rc6-generic_5.5.0-050500rc6.202001122031_amd64.deb
(after disabling secure boot)

=> no wifi

[You-Sheng Yang (vicamo)]

Hi, could you also try https://vicamo.gitlab.io/-/backport-iwlwifi-dkms/-/jobs/401941479/artifacts/aptly/index.html ? This is the unofficial backport-iwlwifi-dkms apt from daily CI. Please have a try and attach dmesg log. If this still fails, then we'd need a public bug for Intel.

[Loïc Minier (lool)]

Dkms module worked with 5.4.0-9-generic and current linux-firmware, thanks!

[Anthony Wong (anthonywong)]

I don't have the same XPS 13 but a Dell Inspiron 5493. It has a wifi controller with the same PCI ID but a different subsystem ID (8086.42a4), and it works fine.

Kernel: 5.4.0-17-generic
linux-firmware: 1.186

Will find an XPS 13 and wifi device with same subsystem ID to test.

[Loïc Minier (lool)]

Just to confirm that I still have broken WiFi with linux-image-5.4.0-14-generic 5.4.0-14.17 (but it works with linux-image-5.3.0-26-generic 5.3.0-26.28 and worked with iwlwifi backports when I tried).

[Loïc Minier (lool)]

Should also mention I've upgraded all packages to latest in focal including linux-firmware 1.186.

[Rex Tsai (chihchun)]

It's the same issue happens on Dell XPS 13 9300[1], the solution[2] has been proposed to kernel mailing list by Acelan. It's expected to be land in the next SRU cycle (05-Apr).

[1] Bug #1865962 “Dell XPS 13 9300 Intel 1650S wifi [34f0:1651] fail...” : Bugs : linux package : Ubuntu - https://bugs.launchpad.net/bugs/1865962
[2] [PATCH 0/6][SRU][Focal] Dell XPS 13 9300 Intel 1650S wifi [34f0:1651] fails to load firmware - https://lists.ubuntu.com/archives/kernel-team/2020-March/107993.html

[Drew DeMarco (drewdemarco)]

To confirm what Rex Tsa mentioned

Tested with Dell XPS 13 7390 2-in-1.

Running -proposed with 5.4.0-18-generic and Wi-Fi is working again.

[Loïc Minier (lool)]

Can confirm 5.4.0-18.22 in proposed fixes iwlwifi for me; thanks!

[Anthony Wong (anthonywong)]

As we got two reports that this issue has been fixed, I'm closing this bug. Feel free to report back if you see the issue unresolved. Thanks!

[Jeremy Soller (jackpot51)]

By the way, this issue still exists on 5.3.0 kernels - https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1863769

[Reshad Dernjani (reshadd94)]

This issue reappeared on kernel 5.6.0 for me :/
The wifi networks are shown but connections cannot be build, they timeout. I am back on 5.5.13 now with 20.04.