Plymouth Theme don't work during shutdown

Asked by Massimo

currently I use Ubuntu 18.04 on a dated, but valid Thinkpad X201.

From the WebSite:

I decide to download this “Plymouth theme” and faithfully follow the instructions for its installation. Everything works properly, written, resolution etc… but when I log out of the system, either with "Turn Off" or "Restart" the exit screen of the chosen Plymouth-theme, does not appear. In the sense that if the active theme at that time includes a writing or an animation and I expect it to show up also during the shutdown of the OS.
When I logout I simply see a black screen and the system closes regularly.
I also specify that the theme in question provides an animation at boot time - which I see regularly - and a different one at logout.
Obviously I tried other themes and also the default theme (which I didn't delete) but this "small" malfunction remains.

Some idea ?

Below I write the output of some commands:

@ThinkPad:~$ lspci | grep -E 'VGA|Display|3D'
00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 02)

@ThinkPad:~$ sudo lshw -c display | grep driver
configuration: driver=i915 latency=0

this is the file of my Grub:
# If you change this file, run 'update-grub' afterwards to update
# /boot/grub/grub.cfg.
# For full documentation of the options in this file, see:
# info -f grub -n 'Simple configuration'

GRUB_DISTRIBUTOR="`lsb_release -i -s 2> /dev/null || echo Debian`"

# Uncomment to enable BadRAM filtering, modify to suit your needs
# This works with Linux (no patch required) and with any kernel that obtains
# the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...)

# Uncomment to disable graphical terminal (grub-pc only)

# The resolution used on graphical terminal
# note that you can use only modes which your graphic card supports via VBE
# you can see them in real GRUB with the command `vbeinfo'
# cartella per sfondi Grub ##

# Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux

# Uncomment to disable generation of recovery mode menu entries

# Uncomment to get a beep at grub start
#GRUB_INIT_TUNE="480 440 1"


What can I do to see the theme during shutdown?

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Ubuntu plymouth Edit question
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actionparsnip (andrew-woodhead666) said :

Have you contacted the author of the theme?

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actionparsnip (andrew-woodhead666) said :

I've seen the opposite way around with Nvidia drivers but you are using an Intel GPU.....

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Massimo (max-1960ufo) said :

Yes, I contacted the author. I have not received a solution. For the drivers I have already seen ALL open source solutions to update. But I didn't have any changes.

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