1

DISCLAIMER: I'm new to Ubuntu (18.04 - no dual boot).

I'd like to remove all colored screens after booting and turning off (while not seeing any code run on the screen) - also changing the login screen background to black (not lock screen).
After the manufacturer logo there's a second long purple screen. Then the screen totally turns off and after a second black screen the ubuntu loading screen shows up. Finally I can log in.
I searched for many questions and there are some thing I tried:

  • Editing GRUB file - removing quiet splash/replacing to only quiet (I remember I could remove the splash, but then there was the code running on screen, so I'd like to change the color to black) - then updating grub
  • Changing plymouth theme file to change the Window.SetBackgroundTop(Bottom)Color to (0,0,0) - this one hasn't changed anything I guess
  • Creating a new plymouth theme and using a total black 1920x1080 image as background - haven't noticed any change, even tho the theme was used as alternative

Some of these changes messed with plymouth's Reboot and Power Off services and couldn't solve it, so I had to reinstall Ubuntu. I hasn't tried anything yet.

Is the first purple screen GRUB and the booting plymouth? I'm not sure..

2
  • Yes. There are 3 screens with purple: after manufacturer logo, then after black screen the ubuntu loading screen, third being the login screen. I'd like all of them black Mar 20, 2019 at 12:18
  • Clean install, haven't touched any config files. Mar 20, 2019 at 12:27

1 Answer 1

1

to achieve the requirements in the Question for default Ubuntu 18.04

need to edit the below files:

  1. for changing grub color: /usr/share/plymouth/themes/ubuntu-logo/ubuntu-logo.grub
  2. for plymouth color: /usr/share/plymouth/themes/ubuntu-logo/ubuntu-logo.script
  3. for login-screen background color: /usr/share/gnome-shell/theme/ubuntu.css

ubuntu-logo.grub my file content. replace the values to 0,0,0,0; for black

if background_color 66,48,228,0.5; then
  clear
fi

ubuntu-logo.script some of my file content. replace the values to (0, 0, 0); for black

Window.SetBackgroundTopColor (0.16, 0.00, 0.12);     # Nice colour on top of the screen fading to
Window.SetBackgroundBottomColor (0, 1.02, 1.02);  # an equally nice colour on the bottom

ubuntu.css my file edited content at around line number 1814

#lockDialogGroup { background-color: #000000; }

after editing the files, save & close all files..

then run sudo update-grub

Reboot to see the change.

0

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.