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callmebob
Asked: 2020-04-03 12:04:54 +0800 CST

background image for when I enter encryption password

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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:

enter image description here

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.

encryption plymouth

1 Answers

  1. Best Answer

    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://imgur.com/VZNlQcE

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

    Here are the steps..

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

    enter image description here

    1. 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
    1. 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:~$
    1. 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..

    1. 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"
    1. 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

    enter image description here

    1. now run sudo update-initramfs -u and this time this command should run successfully with out any Information/ errors.

    2. Reboot to see the Plymouth theme.

    Images of Peter-Rabbit Plymouth Theme..

    enter image description here

    enter image description here

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