[Bug 1853773] Re: Regression: amd64-microcode upgrade causes a bootloop

[Amr Ibrahim]

A duplicate of bug #1853614

** Tags added: regression-update

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Title:
  Regression: amd64-microcode upgrade causes a bootloop

Status in amd64-microcode package in Ubuntu:
  New

Bug description:
  it turned out that the latest amd64-microcode causes a boot loop on
  our new dual socket server (equipped with two AMD EPYC 7252 8-Core
  Processors).

  steps to reproduce ...

    (1) install Ubuntu-Server 18.04.3 LTS (20190805)
    (2) reboot
    (3) apt update
    (4) apt upgrade
    (5) reboot
    ... boot loop ...

  workaround ...

    before (4) prevent a amd64-microcode package upgrade by setting the
  package on hold

       apt-mark hold amd64-microcode

  further information regarding amd64-microcode ...

     - this version causes a boot loop: 3.20191021.1ubuntu0.18.04.2
     - this version is working fine:   3.20180524.1~ubuntu0.18.04.2

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