5 Best Plymouth Theme for Your Linux Machines

For those who doesn't know what Plymouth/Splash Screen is

"Plymouth is the application which provides the graphical 'splash' screen when booting and shutting down an Ubuntu system."

In simple terms, as Ubuntu boots up, you see Ubuntu Text and its Logo splashing. That's called splash screen.

There are many plymouth themes out there. Some of them work out of box and some of them don't since they are old and unmaintained.
To get some standard themes, you can run

 sudo apt-get install plymouth-themes

This will install many plymouth themes to /usr/share/plymouth . Standard Theme setup is very easy.

And here i'm pick 5 best Plymouth theme for you :

1. Captain America Plymouth Theme by vikkimnm

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2. Avatar The Last Firebender - Fire elemental Plymouth theme for Linux by Avtrkrb.

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3. Assassin's Creed Plymouth Boot Splash theme for Linux by Avtrkrb.

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4. Numix theme for Plymouth

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5. Darwin Plymouth Theme by LozanoJack

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Installation Steps (Ubuntu 16.04+)

Lets take example of Aurora Penguins theme

1. Download Plymouth theme - zip/tar.gz and extract it
• In our case, Aurora-Penguinis-Plymouth.tar.gz gets extracted to Aurora-Penguinis-Plymouth
2. Copy the directory to /usr/share/plymouth/themes using sudo
3. With in the directory, look for plymouth file
• In our case it will be aurora-penguinis.plymouth
4. Plymouth Directory name and plymouth file name should be similar. If not rename the directory.
• In our case, they appear differently. Hence rename directory Aurora-Penguinis-Plymouth to aurora-penguinis
5. If its a old theme, then ImageDir and ScriptFile might be wrong. They must be pointing to correct location (/usr/share/plymouth/themes). If thats not the case, correct them. 
• In our case, they are wrong. Hence correct them
  ImageDir=/usr/share/plymouth/themes/aurora-penguinis
  ScriptFile=/usr/share/plymouth/themes/aurora-penguinis/aurora-penguinis.script
6. Install Plymouth with this theme.
• In our case, run 
  sudo update-alternatives --install /usr/share/plymouth/themes/default.plymouth default.plymouth /usr/share/plymouth/themes/aurora-penguinis/aurora-penguinis.plymouth  100
7. Update Plymouth with this theme
• sudo update-alternatives --config default.plymouth
  (and select your theme)
8. Lastly run the command
• sudo update-initramfs -u
9. And finally Reboot!

TroubleShoot

• In case in Step 7, you face error like
  W: plymouth module "(/usr/lib/i386-linux-gnu/plymouth//.so)" missing, skipping that theme.
  you have to be careful. Its a generic error message. Recheck all above steps - if locations are correct in plymouth file. Mostly incorrect locations will be the issue