The prompt asking for media removal is neither shown at the end of the installation nor at 'normal' reboot nor poweroff

[sudodus]

Bug report 'refresh':

This bug is affecting Lubuntu Xenial final, and I was adviced to create a new bug report. The symptoms are the same or similar as in

Bug #966480 The prompt asking for media removal is not shown at the end of the installation.

It affects the live session, when booted from a USB drive, when cloned (with mkusb, usb-creator-gtk, gnome-disks, dd, Win32 Disk Imager).

Workaround: remove the boot option 'splash', but if you know about it, you can press Enter to continue (rebooting or shutting down) with seeing the prompt.

This might also be a symptom of the same problem in the program code as reported in

Bug #1359689: cryptsetup password prompt not shown and/or
Bug #1370707: Plymouth does not display the graphical boot splash

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: plymouth 0.9.2-3ubuntu13
ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
Uname: Linux 4.4.0-21-generic i686
ApportVersion: 2.20.1-0ubuntu2
Architecture: i386
CasperVersion: 1.375
CurrentDesktop: LXDE
Date: Wed Apr 20 04:10:55 2016
DefaultPlymouth: /usr/share/plymouth/themes/lubuntu-logo/lubuntu-logo.plymouth
LiveMediaBuild: Lubuntu 16.04 LTS "Xenial Xerus" - Release i386 (20160419)
MachineType: TOSHIBA SATELLITE PRO C850-19W
ProcCmdLine: file=/cdrom/preseed/username.seed boot=casper initrd=/casper/initrd.lz quiet splash --- debian-installer/language=sv keyboard-configuration/layoutcode?=se
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=sv_SE.UTF-8
 SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: file=/cdrom/preseed/username.seed boot=casper initrd=/casper/initrd.lz quiet splash --- debian-installer/language=sv keyboard-configuration/layoutcode?=se
SourcePackage: plymouth
TextPlymouth: /usr/share/plymouth/themes/lubuntu-text/lubuntu-text.plymouth
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/24/2012
dmi.bios.vendor: Insyde Corp.
dmi.bios.version: 6.10
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: PLCSF8
dmi.board.vendor: Intel
dmi.board.version: Type2 - Board Version
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: OEM Chassis Manufacturer
dmi.chassis.version: OEM Chassis Version
dmi.modalias: dmi:bvnInsydeCorp.:bvr6.10:bd09/24/2012:svnTOSHIBA:pnSATELLITEPROC850-19W:pvrPSCBXE-00C00VN5:rvnIntel:rnPLCSF8:rvrType2-BoardVersion:cvnOEMChassisManufacturer:ct10:cvrOEMChassisVersion:
dmi.product.name: SATELLITE PRO C850-19W
dmi.product.version: PSCBXE-00C00VN5
dmi.sys.vendor: TOSHIBA

[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/1572378

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[sudodus (nio-wiklund)]

This bug affects both Lubuntu Xenial i386 and amd64.

[sudodus (nio-wiklund)]

This bug does not appear exactly in the same way in VirtualBox:

Default, with the boot option 'splash', it does not work to press Enter to continue to shutdown or reboot (different from my real computer).

But the workaround, to remove the boot option 'splash', works. The prompt is displayed, and it works to press Enter to continue to shutdown or reboot.

[sudodus (nio-wiklund)]

This problem is also affecting Lubuntu Xenial final in UEFI mode, which boots from grub, when booting from a cloned USB drive (as described earlier). But it does not affect grub-n-iso boot systems. In that case there is no prompting, it just reboots or shuts down.