[Bug 1900728] Re: Ubuntu boot failure after upgrade to kernel 5.4.0-52

Does 5.4.0-52 boot into recovery mode?

Could you also test mainline kernel?
https://wiki.ubuntu.com/Kernel/MainlineBuilds

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https://bugs.launchpad.net/bugs/1900728

Title:
Ubuntu boot failure after upgrade to kernel 5.4.0-52

Status in linux package in Ubuntu:
Confirmed

Bug description:
I'm on Ubuntu 20.04 LTS. After upgrading from linux 5.4.0-51 to
5.4.0-52 today, the computer boots into initramfs (Busybox) every time
I reboot. No disk errors found there. If I use the grub menu to
switch back to 5.4.0-51, the system boots and runs normally.

This is on a Lenovo P53s laptop running Ubuntu only (no dual boot).

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-51-generic 5.4.0-51.56
ProcVersionSignature: Ubuntu 5.4.0-51.56-generic 5.4.65
Uname: Linux 5.4.0-51-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.6
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: scott 1624 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Tue Oct 20 09:03:33 2020
InstallationDate: Installed on 2020-06-26 (115 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
MachineType: LENOVO 20N6S00B00
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-51-generic root=/dev/mapper/vgubuntu-root ro quiet splash
RelatedPackageVersions:
linux-restricted-modules-5.4.0-51-generic N/A
linux-backports-modules-5.4.0-51-generic N/A
linux-firmware 1.187
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/12/2020
dmi.bios.vendor: LENOVO
dmi.bios.version: N2IET91W (1.69 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20N6S00B00
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40697 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: dmi:bvnLENOVO:bvrN2IET91W(1.69):bd08/12/2020:svnLENOVO:pn20N6S00B00:pvrThinkPadP53s:rvnLENOVO:rn20N6S00B00:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.family: ThinkPad P53s
dmi.product.name: 20N6S00B00
dmi.product.sku: LENOVO_MT_20N6_BU_Think_FM_ThinkPad P53s
dmi.product.version: ThinkPad P53s
dmi.sys.vendor: LENOVO

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