Error at Login Screen after changing the background of Login Screen (Ubuntu 19.04)
wH1t3 l0tUs
My problem happened after I tried to change the background of Login screen. I have changed the file /usr/share/gnome-shell/theme/Yaru/gnome-shell.css and this /usr/share/gnome-shell/theme/gdm3.css. I changed from this one
#lockDialogGroup {
background-color: #2C001E; }
to this
#lockDialogGroup {
background-image: url(file:///home/rico/Pictures/login/wolf.jpg);
background-repeat: no-repeat;
background-size: cover;
background-position: center; }
However when I reboot, the screen looks like this
I have changed everything to the default however the error still there. Is there any way to revert the changes or in the worst case, how can i reinstall it?
UnKNOWn
based on the previous comments/ chat we had..
It is observed that, your /usr/share/gnome-shell/theme/Yaru/gnome-shell.css file contents were changed..
to revert back the changes you need /usr/share/gnome-shell/theme/Yaru/gnome-shell.css file from a freshly installed Ubuntu 19.04 or Unchanged gnome-shell.css file from running Ubuntu 19.04 file..
Here is the file, https://we.tl/t-BjnNI9u9Si I have just Installed a fresh copy of Ubuntu 19.04.
once you download this file.. open it.. copy all the content..
run the below command to open the file
sudo -H gedit /usr/share/gnome-shell/theme/Yaru/gnome-shell.css
Delete all the content in the file /usr/share/gnome-shell/theme/Yaru/gnome-shell.css and paste the content which you have copied from downloaded file from the above link.
Save the file & Close..
download these two files https://we.tl/t-7Tq96QZy6n and replace /usr/share/gnome-shell/modes/ubuntu.json and /usr/share/gnome-shell/modes/yaru.json with these downloaded files.
to check which file is used for alternatives of gdm3.css file..
run sudo update-alternatives --config gdm3.css and choose the number belongs to the file /usr/share/gnome-shell/theme/Yaru/gnome-shell.css
Example:
pratap@i7-4770:~$ sudo update-alternatives --config gdm3.css
[sudo] password for pratap:
There are 2 choices for the alternative gdm3.css (providing /usr/share/gnome-shell/theme/gdm3.css).
Selection Path Priority Status
------------------------------------------------------------
* 0 /usr/share/gnome-shell/theme/Yaru/gnome-shell.css 15 auto mode
1 /usr/share/gnome-shell/theme/Yaru/gnome-shell.css 15 manual mode
2 /usr/share/gnome-shell/theme/gnome-shell.css 10 manual mode
Press <enter> to keep the current choice[*], or type selection number: 0
Now.. your login screen and unlock-screen both will have the default look as it is installed as a fresh Install of Ubuntu 19.04
to change the login-screen background refer to this link..Cannot change login screen background in 18.10
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