[Bug 1854764] Re: Dell 5280 hangs on warm reboot after upgrading intel-microcode package

[Steve Beattie]

Hi,

Sorry for the difficulty you are having.

I think I've done the conversion correctly, but can you please confirm
that the output of iucode-tool -S on these systems gives the processor
signature as '0x00050654'?

If that's the case, I believe that this is https://github.com/intel
/Intel-Linux-Processor-Microcode-Data-Files/issues/21 which is still
waiting on Intel diagnose. That said, it's probably worth us reverting
to the 0x2000064 version of that specific microcode.

The specific microcode your bios currently has in place, 0x200005e, is
also available from the https://launchpad.net/ubuntu/+source/intel-
microcode/3.20190514.0ubuntu0.19.04.3 version of the package; if needed
(by you or others), the binary package can be directly downloaded from
that page, even though it is no longer present in the archive.

** Bug watch added: github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/issues #21
   https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/issues/21

** Changed in: intel-microcode (Ubuntu)
     Assignee: (unassigned) => Steve Beattie (sbeattie)

** Changed in: intel-microcode (Ubuntu)
       Status: New => Confirmed

** Changed in: intel-microcode (Ubuntu)
   Importance: Undecided => High

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https://bugs.launchpad.net/bugs/1854764

Title:
  Dell 5280 hangs on warm reboot after upgrading intel-microcode package

Status in intel-microcode package in Ubuntu:
  Confirmed

Bug description:
  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.

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