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Cannot change login screen background in 18.10

How to change the background image of login screen of Ubuntu 19.04?gdm - login screen background change problem - Ubuntu 18.04 LTSHow can I change the purple background color of the lock screen on Ubuntu 17.10?Change login screen purple background 18.10GDM3 Login Screen on Ubuntu 18.04 not updatingError at Login Screen after changing the background of Login Screen (Ubuntu 19.04)Change Ubuntu default colorchanging the login screen background crashes login screen after rebootingMaking custom gdm themeLockscreen background not showing after bootingKubuntu 12.04: Change login screen background?Log in screen background different from desktopChange color of background on login screenHow to change login screen background Ubuntu Gnome 15.10Changing login background automaticallyChange login screen purple background 18.10

.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty
margin-bottom:0;

10

4

I changed both the desktop and login screen background photos. However,only desktop photo is changed. The one on the login screen is still the purple Ubuntu one. Is this a bug?

18.10 login-screen gdm background

share|improve this question

edited Jun 11 at 18:30

pomsky

40.8k1212 gold badges134134 silver badges162162 bronze badges

asked Oct 25 '18 at 1:05

lovedrinkinglovedrinking

17811 silver badge1111 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Setting->background. What is the difference between lock and lock-in screen? When you lock the computer, you need to go to login screen to enter the password. Shouldn’t they be th same?
  
  – lovedrinking
  Oct 25 '18 at 1:42
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Screen resolution is 4K. Do I need to change something from your provided solution?
  
  – lovedrinking
  Oct 25 '18 at 4:08
  
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Possible duplicate of How can I change the purple background color of the lock screen on Ubuntu 17.10?
  
  – muru
  Oct 25 '18 at 6:15
  

  
  
  
  

add a comment
 | 

10

4

I changed both the desktop and login screen background photos. However,only desktop photo is changed. The one on the login screen is still the purple Ubuntu one. Is this a bug?

18.10 login-screen gdm background

share|improve this question

edited Jun 11 at 18:30

pomsky

40.8k1212 gold badges134134 silver badges162162 bronze badges

asked Oct 25 '18 at 1:05

lovedrinkinglovedrinking

17811 silver badge1111 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Setting->background. What is the difference between lock and lock-in screen? When you lock the computer, you need to go to login screen to enter the password. Shouldn’t they be th same?
  
  – lovedrinking
  Oct 25 '18 at 1:42
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Screen resolution is 4K. Do I need to change something from your provided solution?
  
  – lovedrinking
  Oct 25 '18 at 4:08
  
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Possible duplicate of How can I change the purple background color of the lock screen on Ubuntu 17.10?
  
  – muru
  Oct 25 '18 at 6:15
  

  
  
  
  

add a comment
 | 

I changed both the desktop and login screen background photos. However,only desktop photo is changed. The one on the login screen is still the purple Ubuntu one. Is this a bug?

18.10 login-screen gdm background

share|improve this question

edited Jun 11 at 18:30

pomsky

40.8k1212 gold badges134134 silver badges162162 bronze badges

asked Oct 25 '18 at 1:05

lovedrinkinglovedrinking

17811 silver badge1111 bronze badges

share|improve this question

edited Jun 11 at 18:30

pomsky

40.8k1212 gold badges134134 silver badges162162 bronze badges

asked Oct 25 '18 at 1:05

lovedrinkinglovedrinking

17811 silver badge1111 bronze badges

share|improve this question

edited Jun 11 at 18:30

pomsky

40.8k1212 gold badges134134 silver badges162162 bronze badges

asked Oct 25 '18 at 1:05

lovedrinkinglovedrinking

17811 silver badge1111 bronze badges

edited Jun 11 at 18:30

pomsky

40.8k1212 gold badges134134 silver badges162162 bronze badges

edited Jun 11 at 18:30

pomsky

40.8k1212 gold badges134134 silver badges162162 bronze badges

asked Oct 25 '18 at 1:05

lovedrinkinglovedrinking

17811 silver badge1111 bronze badges

asked Oct 25 '18 at 1:05

lovedrinkinglovedrinking

17811 silver badge1111 bronze badges

2 Answers
2

active

oldest

votes

12

to change the login screen background in Ubuntu 18.10 with default Display Manager that is gdm3

we need to edit the gdm3.css file.

open the file with your favorite editor, mine is gedit. so
sudo -H gedit /etc/alternatives/gdm3.css

go to line number around 1981 and find the below content.

#lockDialogGroup 
 background: none;
 background-color: none;
 background-gradient-direction: vertical;
 background-gradient-start: #6D2169;
 background-gradient-end: #370026; 

change the content with

#lockDialogGroup 
 background: #000000 url(file:///home/pratap/Desktop/1.jpg);
 background-repeat: no-repeat;
 background-size: cover;
 background-position: center; 

here in the line number 1982 url(file://put your actual image path)

save the file, close & reboot to see the change.

Picture of Lock Screen Wallpaper

Picture of Unlock Screen Background

Edit

for 18.04 same method, only line number varies 1814,

#lockDialogGroup 
 background: #2c001e url(resource:///org/gnome/shell/theme/noise-texture.png);
 background-repeat: repeat; 

replace the above content with

#lockDialogGroup 
 background: #000000 url(file:///home/pratap/Desktop/1.jpg);
 background-repeat: no-repeat;
 background-size: cover;
 background-position: center; 

here in the line number 1815 url(file://put your actual image path)

share|improve this answer

edited Jan 30 at 15:47

answered Oct 25 '18 at 2:01

PRATAPPRATAP

6,38844 gold badges1111 silver badges4343 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Looks great. Could you update answer to specify if 18.04 works same way too?
  
  – WinEunuuchs2Unix
  Oct 25 '18 at 2:57
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks. It is working. Just curious. Why "file:///" rather than "file://" ?
  
  – lovedrinking
  Oct 25 '18 at 4:06
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  This seems like an awfully convoluted way to change a login screen image. Are you sure a more "user-friendly" alternative is not available?
  
  – code_dredd
  Oct 25 '18 at 5:27
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @PRATAP I'd like to change my login screen to the same solid color that I've got set for my lock screen (in the Background settings panel). Where are the solid color panels located? Is the an easy modification to your answer to do what I want? Thanks!
  
  – heynnema
  Nov 4 '18 at 0:58
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @PRATAP Excellent, thanks! However, can you put up the code blocks for 18.10, as you're showing the method for 18.04. Also, wouldn't your sudo gedit command be safer with sudo -H gedit?
  
  – heynnema
  Nov 4 '18 at 14:09
  

  
  
  
  

 | 
show 1 more comment

0

You can use Loginized utility for Gnome.
https://github.com/juhaku/loginized

share|improve this answer

answered Feb 24 at 8:32

TomTeoTomTeo

111 bronze badge

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  While this link may answer the question, it is better to include the essential parts of the answer here and provide the link for reference. Link-only answers can become invalid if the linked page changes. - From Review
  
  – mature
  Feb 24 at 14:42
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  @mature Looks fine to me. This is not a link-only answer, rather it just suggests using an application to achieve the goal and provides a link to that application. Link-only answers are answers which, instead of trying to answer the question, contain only (or mostly) link(s) to (external) site(s) which may have an answer to the question.
  
  – pomsky
  Feb 24 at 20:55
  

  
  
  
  

add a comment
 | 

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12

to change the login screen background in Ubuntu 18.10 with default Display Manager that is gdm3

we need to edit the gdm3.css file.

open the file with your favorite editor, mine is gedit. so
sudo -H gedit /etc/alternatives/gdm3.css

go to line number around 1981 and find the below content.

#lockDialogGroup 
 background: none;
 background-color: none;
 background-gradient-direction: vertical;
 background-gradient-start: #6D2169;
 background-gradient-end: #370026; 

change the content with

#lockDialogGroup 
 background: #000000 url(file:///home/pratap/Desktop/1.jpg);
 background-repeat: no-repeat;
 background-size: cover;
 background-position: center; 

here in the line number 1982 url(file://put your actual image path)

save the file, close & reboot to see the change.

Picture of Lock Screen Wallpaper

Picture of Unlock Screen Background

Edit

for 18.04 same method, only line number varies 1814,

#lockDialogGroup 
 background: #2c001e url(resource:///org/gnome/shell/theme/noise-texture.png);
 background-repeat: repeat; 

replace the above content with

#lockDialogGroup 
 background: #000000 url(file:///home/pratap/Desktop/1.jpg);
 background-repeat: no-repeat;
 background-size: cover;
 background-position: center; 

here in the line number 1815 url(file://put your actual image path)

share|improve this answer

edited Jan 30 at 15:47

answered Oct 25 '18 at 2:01

PRATAPPRATAP

6,38844 gold badges1111 silver badges4343 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Looks great. Could you update answer to specify if 18.04 works same way too?
  
  – WinEunuuchs2Unix
  Oct 25 '18 at 2:57
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks. It is working. Just curious. Why "file:///" rather than "file://" ?
  
  – lovedrinking
  Oct 25 '18 at 4:06
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  This seems like an awfully convoluted way to change a login screen image. Are you sure a more "user-friendly" alternative is not available?
  
  – code_dredd
  Oct 25 '18 at 5:27
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @PRATAP I'd like to change my login screen to the same solid color that I've got set for my lock screen (in the Background settings panel). Where are the solid color panels located? Is the an easy modification to your answer to do what I want? Thanks!
  
  – heynnema
  Nov 4 '18 at 0:58
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @PRATAP Excellent, thanks! However, can you put up the code blocks for 18.10, as you're showing the method for 18.04. Also, wouldn't your sudo gedit command be safer with sudo -H gedit?
  
  – heynnema
  Nov 4 '18 at 14:09
  

  
  
  
  

 | 
show 1 more comment

12

to change the login screen background in Ubuntu 18.10 with default Display Manager that is gdm3

we need to edit the gdm3.css file.

open the file with your favorite editor, mine is gedit. so
sudo -H gedit /etc/alternatives/gdm3.css

go to line number around 1981 and find the below content.

#lockDialogGroup 
 background: none;
 background-color: none;
 background-gradient-direction: vertical;
 background-gradient-start: #6D2169;
 background-gradient-end: #370026; 

change the content with

#lockDialogGroup 
 background: #000000 url(file:///home/pratap/Desktop/1.jpg);
 background-repeat: no-repeat;
 background-size: cover;
 background-position: center; 

here in the line number 1982 url(file://put your actual image path)

save the file, close & reboot to see the change.

Picture of Lock Screen Wallpaper

Picture of Unlock Screen Background

Edit

for 18.04 same method, only line number varies 1814,

#lockDialogGroup 
 background: #2c001e url(resource:///org/gnome/shell/theme/noise-texture.png);
 background-repeat: repeat; 

replace the above content with

#lockDialogGroup 
 background: #000000 url(file:///home/pratap/Desktop/1.jpg);
 background-repeat: no-repeat;
 background-size: cover;
 background-position: center; 

here in the line number 1815 url(file://put your actual image path)

share|improve this answer

edited Jan 30 at 15:47

answered Oct 25 '18 at 2:01

PRATAPPRATAP

6,38844 gold badges1111 silver badges4343 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Looks great. Could you update answer to specify if 18.04 works same way too?
  
  – WinEunuuchs2Unix
  Oct 25 '18 at 2:57
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks. It is working. Just curious. Why "file:///" rather than "file://" ?
  
  – lovedrinking
  Oct 25 '18 at 4:06
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  This seems like an awfully convoluted way to change a login screen image. Are you sure a more "user-friendly" alternative is not available?
  
  – code_dredd
  Oct 25 '18 at 5:27
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @PRATAP I'd like to change my login screen to the same solid color that I've got set for my lock screen (in the Background settings panel). Where are the solid color panels located? Is the an easy modification to your answer to do what I want? Thanks!
  
  – heynnema
  Nov 4 '18 at 0:58
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @PRATAP Excellent, thanks! However, can you put up the code blocks for 18.10, as you're showing the method for 18.04. Also, wouldn't your sudo gedit command be safer with sudo -H gedit?
  
  – heynnema
  Nov 4 '18 at 14:09
  

  
  
  
  

 | 
show 1 more comment

to change the login screen background in Ubuntu 18.10 with default Display Manager that is gdm3

we need to edit the gdm3.css file.

open the file with your favorite editor, mine is gedit. so
sudo -H gedit /etc/alternatives/gdm3.css

go to line number around 1981 and find the below content.

#lockDialogGroup 
 background: none;
 background-color: none;
 background-gradient-direction: vertical;
 background-gradient-start: #6D2169;
 background-gradient-end: #370026; 

change the content with

#lockDialogGroup 
 background: #000000 url(file:///home/pratap/Desktop/1.jpg);
 background-repeat: no-repeat;
 background-size: cover;
 background-position: center; 

here in the line number 1982 url(file://put your actual image path)

save the file, close & reboot to see the change.

Picture of Lock Screen Wallpaper

Picture of Unlock Screen Background

Edit

for 18.04 same method, only line number varies 1814,

#lockDialogGroup 
 background: #2c001e url(resource:///org/gnome/shell/theme/noise-texture.png);
 background-repeat: repeat; 

replace the above content with

#lockDialogGroup 
 background: #000000 url(file:///home/pratap/Desktop/1.jpg);
 background-repeat: no-repeat;
 background-size: cover;
 background-position: center; 

here in the line number 1815 url(file://put your actual image path)

share|improve this answer

edited Jan 30 at 15:47

answered Oct 25 '18 at 2:01

PRATAPPRATAP

6,38844 gold badges1111 silver badges4343 bronze badges

#lockDialogGroup 
 background: none;
 background-color: none;
 background-gradient-direction: vertical;
 background-gradient-start: #6D2169;
 background-gradient-end: #370026; 

#lockDialogGroup 
 background: #000000 url(file:///home/pratap/Desktop/1.jpg);
 background-repeat: no-repeat;
 background-size: cover;
 background-position: center; 

#lockDialogGroup 
 background: #2c001e url(resource:///org/gnome/shell/theme/noise-texture.png);
 background-repeat: repeat; 

#lockDialogGroup 
 background: #000000 url(file:///home/pratap/Desktop/1.jpg);
 background-repeat: no-repeat;
 background-size: cover;
 background-position: center; 

share|improve this answer

edited Jan 30 at 15:47

answered Oct 25 '18 at 2:01

PRATAPPRATAP

6,38844 gold badges1111 silver badges4343 bronze badges

answered Oct 25 '18 at 2:01

PRATAPPRATAP

6,38844 gold badges1111 silver badges4343 bronze badges

answered Oct 25 '18 at 2:01

PRATAPPRATAP

6,38844 gold badges1111 silver badges4343 bronze badges

0

You can use Loginized utility for Gnome.
https://github.com/juhaku/loginized

share|improve this answer

answered Feb 24 at 8:32

TomTeoTomTeo

111 bronze badge

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  While this link may answer the question, it is better to include the essential parts of the answer here and provide the link for reference. Link-only answers can become invalid if the linked page changes. - From Review
  
  – mature
  Feb 24 at 14:42
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  @mature Looks fine to me. This is not a link-only answer, rather it just suggests using an application to achieve the goal and provides a link to that application. Link-only answers are answers which, instead of trying to answer the question, contain only (or mostly) link(s) to (external) site(s) which may have an answer to the question.
  
  – pomsky
  Feb 24 at 20:55
  

  
  
  
  

add a comment
 | 

0

You can use Loginized utility for Gnome.
https://github.com/juhaku/loginized

share|improve this answer

answered Feb 24 at 8:32

TomTeoTomTeo

111 bronze badge

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  While this link may answer the question, it is better to include the essential parts of the answer here and provide the link for reference. Link-only answers can become invalid if the linked page changes. - From Review
  
  – mature
  Feb 24 at 14:42
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  @mature Looks fine to me. This is not a link-only answer, rather it just suggests using an application to achieve the goal and provides a link to that application. Link-only answers are answers which, instead of trying to answer the question, contain only (or mostly) link(s) to (external) site(s) which may have an answer to the question.
  
  – pomsky
  Feb 24 at 20:55
  

  
  
  
  

add a comment
 | 

You can use Loginized utility for Gnome.
https://github.com/juhaku/loginized

share|improve this answer

answered Feb 24 at 8:32

TomTeoTomTeo

111 bronze badge

share|improve this answer

answered Feb 24 at 8:32

TomTeoTomTeo

111 bronze badge

answered Feb 24 at 8:32

TomTeoTomTeo

111 bronze badge

answered Feb 24 at 8:32

TomTeoTomTeo

111 bronze badge