After installing Ubuntu Mate 19.04 I wanted to change the lockscreen wallpaper and didn't find a direct way of doing in the wallpaper/display setting. Hence I renamed the wallpaper currently used for the lockscreen and replaced it with a soft link with the wallpaper of my choice - and it worked fine.
Then after reading through some forums, I stumbled upon installing lightDM-gtk-greeter package from the terminal. However, I didn't find a quick way to control lockscreen wallpaper and hence I removed it via terminal commands:
sudo apt-get purge lighDM*
And then rebooted the system which led to booting up in the terminal mode.
I assume/guess after purging (this may not be the right/clean way to remove a package) there should be some init file which I may have to tweak. Maybe that init file is still looking for lightDM stuff and as it is not there it got defaulted to booting up in terminal mode.
Please, can anyone help
- guide me through this? how to recover
- and explain what may have gone wrong
- and good practices to uninstall applications the right/clean way?
PS: This is my day 2 using Linux for a desktop environment. Pardon for asking something obvious.