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

[Juerg Haefliger]

Ubuntu 21.04 (Hirsute Hippo) with kernel 5.11 has reached end of life,
so this bug will not be fixed for that specific release. Please reopen
this bug if you still encounter the same issue with an updated system.

** Changed in: intel-microcode (Ubuntu)
       Status: Confirmed => Won't Fix

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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:
  Won't Fix

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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