Attempting to open a tty session when plymouth is showing the boot process causes the entire system to be frozen in an infinite loop until I shut down via the power button.

[Seija K.]

Whenever I press Ctrl+Alt+F3 when the computer is showing the boot process or the ascii text for ubuntu, the entire system freezes, even the mouse cursor, and I am forced to reboot the machine.

I expected the boot to continue and then open a tty session once the system finished booting, not a complete freeze or lockup.

Description: Ubuntu 18.04.3 LTS
Release: 18.04

plymouth:
  Installed: 0.9.3-1ubuntu7.18.04.2
  Candidate: 0.9.3-1ubuntu7.18.04.2
  Version table:
 *** 0.9.3-1ubuntu7.18.04.2 500
        500 http://us.archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     0.9.3-1ubuntu7 500
        500 http://us.archive.ubuntu.com/ubuntu bionic/main amd64 Packages

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: plymouth 0.9.3-1ubuntu7.18.04.2
ProcVersionSignature: Ubuntu 5.0.0-37.40~18.04.1-generic 5.0.21
Uname: Linux 5.0.0-37-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.9
Architecture: amd64
Date: Fri Dec 6 15:27:51 2019
DefaultPlymouth: /usr/share/plymouth/themes/ubuntu-logo/ubuntu-logo.plymouth
MachineType: Gateway DX4860
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.0.0-37-generic root=UUID=3c16de60-443d-4ba1-baee-e0f3153202c0 ro quiet splash vt.handoff=1
ProcEnviron:
 TERM=linux
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.0.0-37-generic root=UUID=3c16de60-443d-4ba1-baee-e0f3153202c0 ro quiet splash vt.handoff=1
SourcePackage: plymouth
TextPlymouth: /usr/share/plymouth/themes/ubuntu-text/ubuntu-text.plymouth
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/01/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P02-A1
dmi.board.name: IPISB-VR
dmi.board.vendor: Gateway
dmi.board.version: 1.01
dmi.chassis.type: 3
dmi.chassis.vendor: Gateway
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP02-A1:bd08/01/2011:svnGateway:pnDX4860:pvr:rvnGateway:rnIPISB-VR:rvr1.01:cvnGateway:ct3:cvr:
dmi.product.family: Gateway Desktop
dmi.product.name: DX4860
dmi.sys.vendor: Gateway