linux-image-unsigned-5.4.0-46-generic wont initialize console

[Thomas Schweikle]

linux-image-unsigned-5.4.0-46-generic wont initialize console as expected. No monitor is used or found. No graphics, no text console. Only a blank black screen.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-unsigned-5.4.0-46-generic 5.4.0-46.50
ProcVersionSignature: Ubuntu 5.4.0-45.49-generic 5.4.55
Uname: Linux 5.4.0-45-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.8
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: tps 6668 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: XFCE
Date: Tue Sep 1 21:20:15 2020
HibernationDevice: RESUME=/dev/vg/swap_1
InstallationDate: Installed on 2011-10-19 (3240 days ago)
InstallationMedia: Xubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
MachineType: Acer TravelMate P643-M
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-45-generic root=/dev/mapper/vg-root ro elevator=deadline splash acpi=force reboot=bios ipv6.disable=1 crashkernel=384M-2G:128M,2G-:256M vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-5.4.0-45-generic N/A
 linux-backports-modules-5.4.0-45-generic N/A
 linux-firmware 1.187.3
SourcePackage: linux
UpgradeStatus: Upgraded to focal on 2019-04-27 (493 days ago)
dmi.bios.date: 10/21/2013
dmi.bios.vendor: Phoenix Technologies Ltd.
dmi.bios.version: V2.15
dmi.board.asset.tag: No Asset Tag
dmi.board.name: TravelMate P643-M
dmi.board.vendor: Acer
dmi.board.version: V2.15
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: Acer
dmi.chassis.version: V2.15
dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvrV2.15:bd10/21/2013:svnAcer:pnTravelMateP643-M:pvrV2.15:rvnAcer:rnTravelMateP643-M:rvrV2.15:cvnAcer:ct9:cvrV2.15:
dmi.product.family: TravelMate P643-M
dmi.product.name: TravelMate P643-M
dmi.product.sku: TravelMate P643-M_0681_2.15
dmi.product.version: V2.15
dmi.sys.vendor: Acer

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This change was made by a bot.

[Bagas Sanjaya (bagasme)]

"initialize console": Did you mean switch to virtual console session by Ctrl-Alt-F3, or by booting to console-only runlevel by type e in grub and append 3 to `linux ....` line?