How to change the splash screen on ubuntu 12.04

Run bellow command on the shell.

sudo update-alternatives --config default.plymouth
Then it will ask you to select the default one from the available list


 Selection    Path                                                       Priority   Status
------------------------------------------------------------
  0            /lib/plymouth/themes/edubuntu-logo/edubuntu-logo.plymouth   150       auto mode
  1            /lib/plymouth/themes/edubuntu-logo/edubuntu-logo.plymouth   150       manual mode
* 2            /lib/plymouth/themes/ubuntu-logo/ubuntu-logo.plymouth       100       manual mode

Press enter to keep the current choice[*], or type selection number:

You can select appropriate number from the list and enter.  

If your login screen is not graphical on ubuntu 12.04 you can change it back to the normal operation as bellow.

Run command
 sudo gedit /etc/default/grub 

And edit the grup file as bellow.

Bellow line should be active (No # at the beggining) and not commented
  GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
Bellow line should be commented (# at the beggining) as bellow.

  #GRUB_TERMINAL=console

Then you should rebuild the grub by using bellow command after saving the above file.
 sudo update-grub  

Thats it. Restart and confirm it.!!!

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