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
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