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When trying to solve my problem with external monitor not detected I followed an advice to change my display manager to lightdm. I ended up in a login loop so I followed the advice there, uninstalled lightdm and successfully logged in. However, everything looks different now and not very pretty (see the pictures below).

the terminal

folder

I have changed my display manager to gdm3 but nothing changed. And when rebooting, I again ended up in a login loop and had to follow steps in the link above to log in again.

Question: What is it that I did and how can I fix it to have a normal looking GNOME environment again?

pomsky
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Jan Pisl
  • 113

1 Answers1

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It seems your GTK theme got switched to Adwaita, the default GTk theme for GNOME (Ubuntu doesn't use this one by default, 18.04 has Ambiance and Radiance). So you just need to change your GTK theme to something you like.

To do that first install (GNOME) Tweaks by running the following command in Terminal

sudo apt install gnome-tweaks

Then launch Tweaks and change the application theme in the 'Appearance' section.

pomsky
  • 68,507