MY machine is running Debian 8 "Jessie". I installed Gnome desktop environment by

sudo apt-get install gnome

now every time my machine is switched on I'm presented with Gnome desktop environment whereas I want to go back to KDE (login screen doesn't let me change).

How to fix this?

I tried with sudo update-alternatives --config x-window-manager but apparently the windows manager is just a part of the whole GUI system.

  • Your display manager should let you choose. What display manager are you using? kdm (which I use) certainly let's you choose. – Faheem Mitha Mar 12 '16 at 20:07
  • yes kdm and lightdm let you choose but not Gnome apparently. I had to install lightdm to fix it – dragonmnl Mar 13 '16 at 13:01

I doubt that your display manager doesn't let you choose, but I don't like neither Gnome nor KDE, so I don't know what you'll be running, but you can try some others. Personally I like lightdm, but there's a list at https://wiki.debian.org/DisplayManager

A less subtle approach would be to uninstall gnome.

  • apparently I couldn't choose a different workspace from Gnome login screen but installing lightdm and switching to KDE did the trick. – dragonmnl Mar 13 '16 at 11:37

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