[Bug 1908840] Re: Fail to boot due to intel-microcode update

[Andrei]

I see the problem on a Dell Inspiron.  /proc/cpuinfo shows

vendor_id	: GenuineIntel
cpu family	: 6
model		: 78
model name	: Intel(R) Core(TM) i3-6100U CPU @ 2.30GHz
stepping	: 3
microcode	: 0xcc

A working version is

intel-microcode/now 3.20190618.0ubuntu0.16.04.1 amd64
[installed,upgradable to: 3.20201110.0ubuntu0.16.04.2]

Upgrading to 3.20201110.0ubuntu0.16.04.2 leads to a freeze on boot: after selecting
an entry in the grub menu there is a message about loading initramfs and the machine becomes
totally unresponsive, needs a hard poweroff.   Rolling back to the previous version of intel-microcode restores system to a working state.

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to intel-microcode in Ubuntu.
https://bugs.launchpad.net/bugs/1908840

Title:
  Fail to boot due to intel-microcode  update

Status in intel-microcode package in Ubuntu:
  Confirmed

Bug description:
  Issue described in bug: https://bugs.launchpad.net/ubuntu/+source/intel-microcode/+bug/1903883
  is still not fixed.
  As a temporary fix I can add 'dis_ucode_ldr' parameter to kernel.
  Hardware is Acer Aspire v3-372-57M8, i5-6267U, 8GB ram in two modules

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: intel-microcode 3.20201110.0ubuntu0.20.04.2
  ProcVersionSignature: Ubuntu 5.4.0-58.64-generic 5.4.73
  Uname: Linux 5.4.0-58-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27.14
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: XFCE
  Date: Sun Dec 20 20:29:25 2020
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2020-12-11 (8 days ago)
  InstallationMedia: Xubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
  SourcePackage: intel-microcode
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/intel-microcode/+bug/1908840/+subscriptions