background image for when I enter encryption password

Question

Any idea how to change the background image on the screen, where you enter encryption password? It's the noise-texture by default, the same as the default login screen background. Very dull.

I am running 19.10.

Image of the screen in question:

Essentially, when you are installing Ubuntu, you can choose to encrypt the whole HDD. If you do this, you will get this screen before the OS starts loading. I would like to change the this dull background to some custom image.

@PRATAP yup, give me few minutes – callmebob Apr 02 '20 at 20:13 — callmebob, Apr 02 '20 at 20:13
correct, as per my description under the image – callmebob Apr 02 '20 at 20:29 — callmebob, Apr 02 '20 at 20:29
It's not, this one I have already custom. – callmebob Apr 02 '20 at 20:35 — callmebob, Apr 02 '20 at 20:35

PRATAP · Accepted Answer · 2020-04-03T09:21:24.750

OS: Ubuntu 19.10

Ok.. I have Cleared my SSD and done it from scratch to see if it works?

the background color/ look is from the Plymouth theme.. so you need to install the Plymouth theme that fits you.

There are lot if you google.. for example: https://www.gnome-look.org/browse/cat/108/page/8/ord/latest/

For testing purpose I used this Plymouth theme.. https://www.gnome-look.org/p/1294920/

a short video of the result.. https://i.stack.imgur.com/HFJLc.jpg

NOTE: Be careful with the compatibility of the Plymouth theme you are going to use.

Here are the steps..

Download the theme.
copy it to /usr/share/plymouth/themes/ # here "mint-galaxy" is the directory in my case.

Install the theme with the below..

Command:

sudo update-alternatives --install /usr/share/plymouth/themes/default.plymouth default.plymouth /usr/share/plymouth/themes/mint-galaxy/mint-galaxy.plymouth 9999

Select the theme with the below..

Command:

sudo update-alternatives --config default.plymouth

Choose the number belongs to the theme we want.. type the number and press enter..

Example:

pratap@i7-4770:~$ sudo update-alternatives --config default.plymouth 
[sudo] password for pratap: 
There are 2 choices for the alternative default.plymouth (providing /usr/share/plymouth/themes/default.plymouth).

  Selection    Path                                                         Priority   Status
------------------------------------------------------------
  0            /usr/share/plymouth/themes/mint-galaxy/mint-galaxy.plymouth   100       auto mode
* 1            /usr/share/plymouth/themes/mint-galaxy/mint-galaxy.plymouth   100       manual mode
  2            /usr/share/plymouth/themes/ubuntu-logo/ubuntu-logo.plymouth   100       manual mode

Press <enter> to keep the current choice[*], or type selection number: 
pratap@i7-4770:~$

update the initramfs with the below..

Command:

sudo update-initramfs -u

Here at step 5 we will notice Information to set the RESUME Variable.. until we set this variable update-initramfs -u command will not get success..

So how to make the RESUME variable?

note down the info from step 5 which gives you the path..

to know the UUID of that path.. run sudo blkid

example:

pratap@i7-4770:~$ sudo blkid
[sudo] password for pratap: 
/dev/mapper/sda3_crypt: UUID="ugg6wW-5d3T-7iMb-vKep-lzLJ-Jyfw-pCPMDH" TYPE="LVM2_member"
/dev/mapper/vgubuntu-swap_1: UUID="5a53e741-abcf-464e-866f-3d32c231ed7a" TYPE="swap"
/dev/mapper/vgubuntu-root: UUID="2e51d644-c62c-4fb1-98b0-f451cc6d7191" TYPE="ext4"
/dev/sda3: UUID="af10b57f-1188-4129-be36-d8c1471827c7" TYPE="crypto_LUKS" PARTUUID="4d0e01c9-d3e7-4c33-8f90-ba8d3b14b5ec"
/dev/loop0: TYPE="squashfs"
/dev/loop1: TYPE="squashfs"
/dev/loop2: TYPE="squashfs"
/dev/loop3: TYPE="squashfs"
/dev/loop4: TYPE="squashfs"
/dev/loop5: TYPE="squashfs"
/dev/loop6: TYPE="squashfs"
/dev/sda1: UUID="CDA8-B894" TYPE="vfat" PARTLABEL="EFI System Partition" PARTUUID="e6148d22-a32e-4c0e-b8b8-3f4dc6842059"
/dev/sda2: UUID="b05c41d5-ef6c-43a6-ace4-ac76123c643c" TYPE="ext4" PARTUUID="6563ffaa-2855-4682-8d37-17b6702923e9"
pratap@i7-4770:~$

the line required in my case is

/dev/mapper/vgubuntu-swap_1: UUID="5a53e741-abcf-464e-866f-3d32c231ed7a" TYPE="swap"

now create a text file named resume with below content and place it in /etc/initramfs-tools/conf.d/ # Your UUID will be different. Change it in below.

Content:

RESUME=UUID=5a53e741-abcf-464e-866f-3d32c231ed7a

now run sudo update-initramfs -u and this time this command should run successfully with out any Information/ errors.
Reboot to see the Plymouth theme.

Images of Peter-Rabbit Plymouth Theme..

Works well, but how do you know the compatibility? E.g. the highest voted Theme does not work. Age might be an indicator, but how to really know? I removed it using sudo update-alternatives --remove default.plymouth /usr/share/plymouth/themes/Earth-sunrise/Earth-sunrise.plymouth — pLumo, Apr 03 '20 at 09:35
wow.. thanks a lot for all the effort. I will play with this as soon as I have time — callmebob, Apr 03 '20 at 13:24
What is " 0 /usr/share/plymouth/themes/mint-galaxy/mint-galaxy.plymouth 100 auto mode"? Have you tested it on Ubuntu? Linux Mint is not Ubuntu. What is the output from Ubuntu? — mikewhatever, Apr 03 '20 at 19:20
Amazing. Thanks for the effort and most of all giving me the name 'Plymouth' - no, I didn't know it :) This opens the doors to so many new features. +1 ofc. — callmebob, Apr 03 '20 at 19:20

background image for when I enter encryption password

1 Answers1