Public bug reported:
We have brand-new Dell T 5280 workstations (Intel Xeon W-2133 3.6 GHz
(3.9 GHz Turbo), 6 Cores) with latest BIOS (1.13.1) and Ubuntu 18.04.3
LTS
$ uname -a
Linux hostname 4.15.0-70-generic #79-Ubuntu SMP Tue Nov 12 10:36:11 UTC 2019
x86_64 x86_64 x86_64 GNU/Linux
$ lsb_release -rd
Description: Ubuntu 18.04.3 LTS
Release: 18.04
$ dpkg -l | grep linux-image-4 | grep ^i
ii linux-image-4.15.0-66-generic 4.15.0-66.75
amd64 Signed kernel image generic
ii linux-image-4.15.0-70-generic 4.15.0-70.79
amd64 Signed kernel image generic
$ cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 85
model name : Intel(R) Xeon(R) W-2133 CPU @ 3.60GHz
stepping : 4
microcode : 0x200005e
cpu MHz : 1200.410
cache size : 8448 KB
physical id : 0
siblings : 12
[...]
After upgrading the 'intel-microcode' package from
3.20180312.0~ubuntu18.04.1 to 3.20191115.1ubuntu0.18.04.1 the machine
hangs upon a warm restart (reboot --> black screen, cursor blinking in
the top left corner). Powering off the machine and turning it on again
will boot just fine.
Removing the intel-microcode package will and rebooting twice will fix
the issue. After reinstalling version 3.20180312.0~ubuntu18.04.1 the
machine will still be booting correctly.
** Affects: intel-microcode (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1854764
Title:
Dell 5280 hangs on warm reboot after upgrading intel-microcode package
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