Public bug reported:
After today's updates, including:
grub-common:amd64 2.02-2ubuntu8.18
grub-efi-amd64-bin:amd64 2.02-2ubuntu8.18
grub-pc-bin:amd64 2.02-2ubuntu8.18
grub2-common:amd64 2.02-2ubuntu8.18
grub-pc:amd64 2.02-2ubuntu8.18
grub-efi-amd64-signed:amd64 1.93.20+2.02-2ubuntu8.18
I was dual booting into Windows and back, so that I can say with
certainty that the bug started affecting me today when I came back into
Ubuntu.
I get the error "Failed to start Load Kernel Modules" and my video
monitor is restricted to "Unknown Display" 1024 x 768 but works
correctly otherwise.
On August 26 the kernel updated to 4.15.0-115 from 4.15.0-112 which
seemed to cause no problems.
I don't see any other likely suspects in today's upgrade, BUT it is
fixed by booting into the prior kernel version 4.15.0-112, leaving an
interplay between grub and the newer kernel as a likely culprit.
Description: Ubuntu 18.04.5 LTS
Release: 18.04
grub2-common Installed: 2.02-2ubuntu8.18
(etc as above)
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: grub2-common 2.02-2ubuntu8.18
ProcVersionSignature: Ubuntu 4.15.0-115.116-generic 4.15.18
Uname: Linux 4.15.0-115-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.17
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Sun Sep 6 21:53:36 2020
InstallationDate: Installed on 2018-08-26 (742 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
ProcEnviron:
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: grub2
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: grub2 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug bionic
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https://bugs.launchpad.net/bugs/1894589
Title:
After grub updates the video display is wrong
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