[Bug 1882914] [NEW] Thinkpad T460S won't boot with latest intel-microcode update

Nicolas Delvaux 1882914 at bugs.launchpad.net
Wed Jun 10 09:22:45 UTC 2020 

Public bug reported:

This morning I installed the security update "3.20200609.0ubuntu0.20.04.0" of intel microcode and then, after rebooting, my T460S laptop is stuck with the "loading initial ramdisk" message.
Selecting an older kernel did not help.

What I had to do to recover is boot on a live session, chroot into my
system, rollback to intel-microcode version "3.20191115.1ubuntu3" then
regenerating initramfs.

Then I was able to reboot normally.

Note that my BIOS/firmware is up-to-date (according to "fwupdmgr
update").

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: intel-microcode 3.20191115.1ubuntu3
ProcVersionSignature: Ubuntu 5.4.0-37.41-generic 5.4.41
Uname: Linux 5.4.0-37-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.2
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Wed Jun 10 11:12:04 2020
InstallationDate: Installed on 2017-03-23 (1174 days ago)
InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
SourcePackage: intel-microcode
UpgradeStatus: Upgraded to focal on 2020-04-30 (40 days ago)

** Affects: intel-microcode (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug focal

** Description changed:

- This morning I installed version the security update "3.20200609.0ubuntu0.20.04.0" of intel microcode and then, after rebooting, my T460S laptop is stuck with the "loading initial ramdisk" message.
+ This morning I installed the security update "3.20200609.0ubuntu0.20.04.0" of intel microcode and then, after rebooting, my T460S laptop is stuck with the "loading initial ramdisk" message.
  Selecting an older kernel did not help.
  
- 
- What I had to do is boot on a live session, chroot into my system, rollback to intel-microcode version "3.20191115.1ubuntu3" then regenerating intramfs.
+ What I had to do to recover is boot on a live session, chroot into my
+ system, rollback to intel-microcode version "3.20191115.1ubuntu3" then
+ regenerating intramfs.
  
  Then I was able to reboot normally.
  
- Note that my BIOS/firware is up-to-date (according to "fwupdmgr
+ Note that my BIOS/firmware is up-to-date (according to "fwupdmgr
  update").
  
  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: intel-microcode 3.20191115.1ubuntu3
  ProcVersionSignature: Ubuntu 5.4.0-37.41-generic 5.4.41
  Uname: Linux 5.4.0-37-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27.2
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  Date: Wed Jun 10 11:12:04 2020
  InstallationDate: Installed on 2017-03-23 (1174 days ago)
  InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2)
  ProcEnviron:
-  TERM=xterm-256color
-  PATH=(custom, no user)
-  XDG_RUNTIME_DIR=<set>
-  LANG=fr_FR.UTF-8
-  SHELL=/bin/bash
+  TERM=xterm-256color
+  PATH=(custom, no user)
+  XDG_RUNTIME_DIR=<set>
+  LANG=fr_FR.UTF-8
+  SHELL=/bin/bash
  SourcePackage: intel-microcode
  UpgradeStatus: Upgraded to focal on 2020-04-30 (40 days ago)

** Description changed:

  This morning I installed the security update "3.20200609.0ubuntu0.20.04.0" of intel microcode and then, after rebooting, my T460S laptop is stuck with the "loading initial ramdisk" message.
  Selecting an older kernel did not help.
  
  What I had to do to recover is boot on a live session, chroot into my
  system, rollback to intel-microcode version "3.20191115.1ubuntu3" then
- regenerating intramfs.
+ regenerating initramfs.
  
  Then I was able to reboot normally.
  
  Note that my BIOS/firmware is up-to-date (according to "fwupdmgr
  update").
  
  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: intel-microcode 3.20191115.1ubuntu3
  ProcVersionSignature: Ubuntu 5.4.0-37.41-generic 5.4.41
  Uname: Linux 5.4.0-37-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27.2
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  Date: Wed Jun 10 11:12:04 2020
  InstallationDate: Installed on 2017-03-23 (1174 days ago)
  InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=fr_FR.UTF-8
   SHELL=/bin/bash
  SourcePackage: intel-microcode
  UpgradeStatus: Upgraded to focal on 2020-04-30 (40 days ago)

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https://bugs.launchpad.net/bugs/1882914

Title:
  Thinkpad T460S won't boot with latest intel-microcode update

Status in intel-microcode package in Ubuntu:
  New

Bug description:
  This morning I installed the security update "3.20200609.0ubuntu0.20.04.0" of intel microcode and then, after rebooting, my T460S laptop is stuck with the "loading initial ramdisk" message.
  Selecting an older kernel did not help.

  What I had to do to recover is boot on a live session, chroot into my
  system, rollback to intel-microcode version "3.20191115.1ubuntu3" then
  regenerating initramfs.

  Then I was able to reboot normally.

  Note that my BIOS/firmware is up-to-date (according to "fwupdmgr
  update").

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: intel-microcode 3.20191115.1ubuntu3
  ProcVersionSignature: Ubuntu 5.4.0-37.41-generic 5.4.41
  Uname: Linux 5.4.0-37-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27.2
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  Date: Wed Jun 10 11:12:04 2020
  InstallationDate: Installed on 2017-03-23 (1174 days ago)
  InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=fr_FR.UTF-8
   SHELL=/bin/bash
  SourcePackage: intel-microcode
  UpgradeStatus: Upgraded to focal on 2020-04-30 (40 days ago)

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