intel microcode breaks booting asus zenbook UX362FA

Bug #1830685 reported by Petr Nosek
16
This bug affects 3 people
Affects Status Importance Assigned to Milestone
ubuntu-release-upgrader (Ubuntu)
Confirmed
Undecided
Unassigned

Bug Description

Hi,

  when booting kernel, it fails on message: "Loading initial ramdisk ..." and nothing happens.

  I'm using LVM and disk is encrpyted by LUKS.

  Everything works 1 month before. Today I had to reboot PC and all my kernels has the same problem. Recovery mode does not work.

  Kernel 4.18.0 from Ubuntu 18.10 sometimes works and sometimes not (the same message: Loading initial ramdisk...).

  I was looking for solution and adding "dis_ucode_ldr" parameter before booting helps. Now I can boot all my kernels.

  So I think - it is problem with microcode.

  Petr

ProblemType: Bug
DistroRelease: Ubuntu 19.04
Package: ubuntu-release-upgrader-core 1:19.04.16.5
ProcVersionSignature: Ubuntu 5.0.0-15.16-generic 5.0.6
Uname: Linux 5.0.0-15-generic x86_64
ApportVersion: 2.20.10-0ubuntu27
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Tue May 28 09:18:55 2019
InstallationDate: Installed on 2019-04-04 (53 days ago)
InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.3)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
Symptom: dist-upgrade
UpgradeStatus: Upgraded to disco on 2019-05-27 (0 days ago)
VarLogDistupgradeTermlog:

Revision history for this message
Petr Nosek (petr-nosek) wrote :
Revision history for this message
Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in ubuntu-release-upgrader (Ubuntu):
status: New → Confirmed
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