After an encrypted installation, no splash screen or prompt is displayed asking me to remove the installation disk. Pressing any key (not just Enter) causes the system to reboot.

[Aaron Rainbolt]

This bug was discovered while doing an Ubuntu QA test, "Install (entire disk with lvm and encryption)" for Ubuntu Kinetic. The host system specs are the same as here: https://bugs.launchpad.net/ubuntu/+source/plymouth/+bug/1973150

At step 24, when I click the "Restart now" button, the screen goes black, except for one solid, non-blinking underline-like cursor in the upper-left corner of the VM screen. It appears to just stay there, never showing me the prompt to remove the installation media and press Enter to reboot. Additionally, I can press any key (not just Enter) to trigger a system reboot at this point.

Steps to reproduce the bug:

1: Download the Ubuntu Kinetic daily ISO from 2022-05-11. Here's the link: http://cdimage.ubuntu.com/daily-live/20220511.1/kinetic-desktop-amd64.iso
2: Open virt-manager, and ensure that you have a connection to "QEMU/KVM User session". (If you don't, you can create this connection in virt-manager by clicking "File", "Add Connection", selecting "QEMU/KVM user session" in the "Hypervisor" drop down, then clicking "Connect".
3: Create a new VM under QEMU/KVM user session. Select the Kinetic ISO downloaded above, set the OS to "Ubuntu 21.04" (that's the newest version my virt-manager recognizes), and give it 4 GB RAM, 2 CPU cores, and 20 GB of disk space.
4: Follow the steps in this test procedure: http://iso.qa.ubuntu.com/qatracker/milestones/433/builds/247872/testcases/1451/results

Expected results: In step 24, after clicking the "Restart Now" button, I should be told to remove the installation media and press Enter to reboot. Only the Enter key should cause a reboot.

Actual results: Prompt is never displayed, any key will trigger the reboot (one time I did "Shift+0" because I was accidentally typing in the VM rather than in a text document, and one time I think I did "j" - both triggered a reboot).

Note: Apport isn't able to open my boot.log file for some odd reason, so I've manually copied it out of my system and attached it.

ProblemType: Bug
DistroRelease: Ubuntu 22.10
Package: plymouth 0.9.5+git20211018-1ubuntu3
ProcVersionSignature: Ubuntu 5.15.0-27.28-generic 5.15.30
Uname: Linux 5.15.0-27-generic x86_64
ApportVersion: 2.20.11-0ubuntu82
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Thu May 12 04:20:05 2022
DefaultPlymouth: /usr/share/plymouth/themes/bgrt/bgrt.plymouth
InstallationDate: Installed on 2022-05-12 (0 days ago)
InstallationMedia: Ubuntu 22.10 "Kinetic Kudu" - Alpha amd64 (20220511.1)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 002: ID 0627:0001 Adomax Technology Co., Ltd QEMU USB Tablet
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Lsusb-t:
 /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/15p, 5000M
 /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/15p, 480M
     |__ Port 1: Dev 2, If 0, Class=Human Interface Device, Driver=usbhid, 480M
MachineType: QEMU Standard PC (Q35 + ICH9, 2009)
ProcCmdLine: BOOT_IMAGE=/vmlinuz-5.15.0-27-generic root=/dev/mapper/vgubuntu-root ro quiet splash vt.handoff=7
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no username)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB: 0 qxldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.15.0-27-generic root=/dev/mapper/vgubuntu-root ro quiet splash vt.handoff=7
SourcePackage: plymouth
TextPlymouth: /usr/share/plymouth/themes/ubuntu-text/ubuntu-text.plymouth
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/01/2014
dmi.bios.release: 0.0
dmi.bios.vendor: SeaBIOS
dmi.bios.version: 1.14.0-2
dmi.chassis.type: 1
dmi.chassis.vendor: QEMU
dmi.chassis.version: pc-q35-6.0
dmi.modalias: dmi:bvnSeaBIOS:bvr1.14.0-2:bd04/01/2014:br0.0:svnQEMU:pnStandardPC(Q35+ICH9,2009):pvrpc-q35-6.0:cvnQEMU:ct1:cvrpc-q35-6.0:sku:
dmi.product.name: Standard PC (Q35 + ICH9, 2009)
dmi.product.version: pc-q35-6.0
dmi.sys.vendor: QEMU

[Leó Kolbeinsson (leok)]

Tested daily Ubuntu Kinetic ISO dated 12-05-2022
and unable to reproduce error.

http://iso.qa.ubuntu.com/qatracker/milestones/433/builds/247906/testcases/1451/results/

[Ubuntu QA Website (ubuntuqa)]

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
http://iso.qa.ubuntu.com/qatracker/reports/bugs/1973157

[Daniel van Vugt (vanvugt)]

Thanks for the bug report.

It's the same logic in Plymouth as in bug 1973150 so I've now generalized bug 1973150 to cover this.