Comment 0 for bug 1705345

I tried to upgrade linux kernel, from 4.10.0-26 to 4.10.0-28, but the installation hangs on the following output lines:

sudo apt-get install unrar linux-generic linux-headers-generic linux-image-generic linux-signed-generic linux-signed-image-generic
Configurazione di linux-image-4.10.0-28-generic (4.10.0-28.32)...
Running depmod.
update-initramfs: deferring update (hook will be called later)
Examining /etc/kernel/postinst.d.
run-parts: executing /etc/kernel/postinst.d/apt-auto-removal 4.10.0-28-generic /boot/vmlinuz-4.10.0-28-generic
run-parts: executing /etc/kernel/postinst.d/dkms 4.10.0-28-generic /boot/vmlinuz-4.10.0-28-generic

Then I used ps to see running processes on the console, and notice this one was blocking post-installation:

plymouth --ping

I could not but manually kill plymouth, then the script resumed but then froze again a few line later and so on, but is that safe for the installation?

$ lsb_release -rd
Description: Ubuntu 17.04
Release: 17.04

$ apt-cache policy plymouth
plymouth:
  Installato: 0.9.2-3ubuntu15
  Candidato: 0.9.2-3ubuntu15
  Tabella versione:
 *** 0.9.2-3ubuntu15 500
        500 http://ubuntu.mirror.garr.it/ubuntu zesty/main amd64 Packages
        100 /var/lib/dpkg/status

ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: plymouth 0.9.2-3ubuntu15
ProcVersionSignature: Ubuntu 4.10.0-26.30-generic 4.10.17
Uname: Linux 4.10.0-26-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.4-0ubuntu4.4
Architecture: amd64
CurrentDesktop: GNOME
Date: Wed Jul 19 22:32:14 2017
DefaultPlymouth: /usr/share/plymouth/themes/ubuntu-gnome-logo/ubuntu-gnome-logo.plymouth
InstallationDate: Installed on 2017-05-22 (58 days ago)
InstallationMedia: Ubuntu-GNOME 17.04 "Zesty Zapus" - Release amd64 (20170412)
MachineType: Dell Inc. Precision M4800
ProcCmdLine: BOOT_IMAGE=/vmlinuz-4.10.0-26-generic.efi.signed root=/dev/mapper/vg-root ro quiet splash vt.handoff=7
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=it_IT.UTF-8
 SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.10.0-26-generic.efi.signed root=/dev/mapper/vg-root ro quiet splash vt.handoff=7
SourcePackage: plymouth
TextPlymouth: /usr/share/plymouth/themes/ubuntu-gnome-text/ubuntu-gnome-text.plymouth
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/02/2014
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A06
dmi.board.name: 0T3YTY
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA06:bd01/02/2014:svnDellInc.:pnPrecisionM4800:pvr01:rvnDellInc.:rn0T3YTY:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: Precision M4800
dmi.product.version: 01
dmi.sys.vendor: Dell Inc.