[Bug 1911893] Re: latest microcode is not working properly on intel core i9

[Alex Murray]

Currently the microcode driver does not have any mechanism to avoid
loading the microcode on particular machines - and neither does the
intel-microcode package in Ubuntu - the only option is to remove this
particular microcode from the intel-microcode package - however though
as I said above, it only appears to fail on this one machine so far -
others with the same CPU are not affected. And so if we were to remove
this particular microcode for this CPU from the package then other users
would then become vulnerable to the various security issues etc that
this microcode update is fixing. So at this stage I don't think there is
a lot we can easily do.

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https://bugs.launchpad.net/bugs/1911893

Title:
  latest microcode is not working properly on intel core i9

Status in intel-microcode package in Ubuntu:
  New

Bug description:
  When using latest ubuntu LTS I can see black screen. Latest working
  version 3.20191115.1ubuntu3. Please fix the bug.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: intel-microcode 3.20200609.0ubuntu0.20.04.2
  ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
  Uname: Linux 5.4.0-42-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.11-0ubuntu27.4
  Architecture: amd64
  CasperMD5CheckResult: pass
  CasperVersion: 1.445.1
  CurrentDesktop: ubuntu:GNOME
  Date: Fri Jan 15 10:13:34 2021
  LiveMediaBuild: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=C.UTF-8
   SHELL=/bin/bash
  SourcePackage: intel-microcode
  UpgradeStatus: No upgrade log present (probably fresh install)

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