[Bug 1931540] Re: Latest 3.20210608.0ubuntu0.21.04.1 update in hirsute makes iwlwifi restarting in a loop

[Alex Murray]

@didrocks - any chance you could try testing with the latest iwlwifi
firmware? there was a suggestion on the upstream bug report that this
may help (or at least it would be good to test whether this has any
affect).

https://github.com/intel/Intel-Linux-Processor-Microcode-Data-
Files/issues/56#issuecomment-864610940

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https://bugs.launchpad.net/bugs/1931540

Title:
  Latest 3.20210608.0ubuntu0.21.04.1 update in hirsute makes iwlwifi
  restarting in a loop

Status in intel-microcode package in Ubuntu:
  Confirmed

Bug description:
  To report this bug, I have downgraded to 3.20210216.0ubuntu0.21.04.1.

  After upgrading to latest security update of intel-microcode, my wifi
  reception is cut every second and restart with:

  juin 10 09:32:55 casanier wpa_supplicant[2158]: wlp3s0: CTRL-EVENT-REGDOM-CHANGE init=DRIVER type=WORLD
  juin 10 09:32:55 casanier wpa_supplicant[2158]: wlp3s0: CTRL-EVENT-SIGNAL-CHANGE above=1 signal=-58 noise=9999 txrate=300000
  juin 10 09:32:56 casanier kernel: iwlwifi 0000:03:00.0: Microcode SW error detected.  Restarting 0x2000000.
  juin 10 09:32:56 casanier kernel: iwlwifi 0000:03:00.0: Start IWL Error Log Dump:
  juin 10 09:32:56 casanier kernel: iwlwifi 0000:03:00.0: Status: 0x00000040, count: 6

  
  The network connection is thus unusable. Downgrading will stop showing the previous error in the journal.

  I have attached the whole log corresponding to this error. It’s
  restarting every second approximately.

  ProblemType: Bug
  DistroRelease: Ubuntu 21.04
  Package: intel-microcode 3.20210216.0ubuntu0.21.04.1
  ProcVersionSignature: Ubuntu 5.11.0-18.19-generic 5.11.17
  Uname: Linux 5.11.0-18-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair nvidia_modeset nvidia
  ApportVersion: 2.20.11-0ubuntu65.1
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CurrentDesktop: ubuntu:GNOME
  Date: Thu Jun 10 09:46:59 2021
  InstallationDate: Installed on 2020-04-24 (411 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=fr_FR.UTF-8
   SHELL=/bin/bash
  SourcePackage: intel-microcode
  UpgradeStatus: No upgrade log present (probably fresh install)

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