[Bug 1760095] Re: systems hang on intel microcode update

[Tyler Hicks]

*** This bug is a duplicate of bug 1759920 ***
    https://bugs.launchpad.net/bugs/1759920

Thanks for the report, Gordon, and sorry for the trouble you're
experiencing.

** Information type changed from Private Security to Public

** This bug has been marked a duplicate of bug 1759920
   intel-microcode 3.20180312.0 causes lockup at login screen(w/ linux-image-4.13.0-37-generic)

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https://bugs.launchpad.net/bugs/1760095

Title:
  systems hang on intel microcode update

Status in intel-microcode package in Ubuntu:
  New

Bug description:
  The intel-microcode was updated last night on Kubuntu 17.10 from:
      3.20180108.0+really20170707ubuntu17.10.1
  to
      3.20180312.0~ubuntu17.10.1

  This resulted in *both* of my systems hanging shortly after boot (random times, from almost immediately to ~1 minute). (MS Windows still booted OK on both systems).
  Eventually I managed to get both to start in single user mode and downgraded to the previous version (download from the website onto a USB stick, mount it and install with dpkg). This has fixed the problem.
  The two system are running these CPUs:
      Intel(R) Core(TM) i5-2500K CPU @ 3.30GHz
      Intel(R) Core(TM) i5-4330M CPU @ 2.80GHz

  I have another system running 18.04beta. It seems OK (and only has the 3.20180312.0 available as an option!). It is:
      Intel(R) Core(TM) i5-5250U CPU @ 1.60GHz

  (I first downgraded the plymouth update, but that didn't fix things
  and I'm now back on the latest version of that, which is working OK).

  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: intel-microcode 3.20180108.0+really20170707ubuntu17.10.1
  ProcVersionSignature: Ubuntu 4.13.0-37.42-generic 4.13.13
  Uname: Linux 4.13.0-37-generic x86_64
  ApportVersion: 2.20.7-0ubuntu3.7
  Architecture: amd64
  CurrentDesktop: KDE
  Date: Fri Mar 30 13:32:05 2018
  InstallationDate: Installed on 2017-11-19 (131 days ago)
  InstallationMedia: Kubuntu 17.10 "Artful Aardvark" - Release amd64 (20171017.1)
  SourcePackage: intel-microcode
  UpgradeStatus: No upgrade log present (probably fresh install)

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