Public bug reported:
Regular package updates today brought these packages (and a few libpam-
XXX):
grub-common:amd64 (2.04-1ubuntu26.2, 2.04-1ubuntu26.3)
grub2-common:amd64 (2.04-1ubuntu26.2, 2.04-1ubuntu26.3)
grub-pc:amd64 (2.04-1ubuntu26.2, 2.04-1ubuntu26.3)
grub-pc-bin:amd64 (2.04-1ubuntu26.2, 2.04-1ubuntu26.3)
linux-firmware:amd64 (1.187.2, 1.187.3)
After the following reboot, the machine would no longer come up. It got
past Grub, but instead of Ubuntu logo appearing a second later, screen
would stay entirely black. I waited at least 5 minutes, no change. I
ended this with the power button.
Subsequent tries in recovery mode and/or with the previous kernel didn't
boot, either. The same machine would boot off an installation medium
(USB pen drive) or the other connected hard disk just fine. Boot drive
selection was done in BIOS.
After a lot of back and forth, I ended up downgrading the above packages
using the root shell in recovery mode: linux-firmware to v1.187
(v1.187.2 was not available), all four Grub packages to
2.04-1ubuntu26.2.
With this, machine boots fine again.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-firmware 1.187
ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
Uname: Linux 5.4.0-42-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: mah 1487 F.... pulseaudio
/dev/snd/pcmC0D0p: mah 1487 F...m pulseaudio
/dev/snd/controlC1: mah 1487 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Mon Aug 31 22:20:10 2020
Dependencies:
InstallationDate: Installed on 2016-05-04 (1580 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
IwConfig:
lo no wireless extensions.
enp0s25 no wireless extensions.
MachineType: Dell Inc. Vostro 200
PackageArchitecture: all
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-42-generic
root=UUID=0e33bd99-d89c-4abe-8f18-10d9206ef547 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-5.4.0-42-generic N/A
linux-backports-modules-5.4.0-42-generic N/A
linux-firmware 1.187
RfKill:
SourcePackage: linux-firmware
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/20/2008
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.0.16
dmi.board.name: 0CU409
dmi.board.vendor: Dell Inc.
dmi.board.version: ���
dmi.chassis.type: 3
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: OEM
dmi.modalias:
dmi:bvnDellInc.:bvr1.0.16:bd09/20/2008:svnDellInc.:pnVostro200:pvr:rvnDellInc.:rn0CU409:rvr:cvnDellInc.:ct3:cvrOEM:
dmi.product.name: Vostro 200
dmi.sys.vendor: Dell Inc.
** Affects: linux-firmware (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal
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https://bugs.launchpad.net/bugs/1893694
Title:
Latest update breaks booting
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