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

[t-legiaw]

Public bug reported:

it turned out that the latest amd64-microcode caused 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

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 bootloop: 3.20191021.1ubuntu0.18.04.2  
   - this version is working fine:   3.20180524.1~ubuntu0.18.04.2

** Affects: amd64-microcode (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1853773

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 caused 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

  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 bootloop: 3.20191021.1ubuntu0.18.04.2  
     - this version is working fine:   3.20180524.1~ubuntu0.18.04.2

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