So I thought about switching to LightDM. I switched by doing

sudo systemctl disable sddm
sudo systemctl enable lightdm

Then I restarted arch linux and everything ran fine. But then I thought about getting a better looking display manager. So I uncommented the line in /ect/lightdm/lightdm.conf that says this:


I can't remember exactly what was there. Now, I think that I didn't install that theme, because when I booted up arch linux, it says "cannot boot light display manager" or something like that. However, I can't figure out how to access the terminal. If I get the terminal, I can just change back the display manager or re-comment that line. How do I fix this? All I need to do is access the terminal and then I'm good to go, but I can't seem to figure out how.

  • you need to edit grub and force system to boot to rescue mode or emergency mode and then mount root. this link can be useful ostechnix.com/…
    – binarysta
    Sep 29, 2020 at 22:15
  • Add 3 as your boot argument. Revert the changes. Reboot. Sep 29, 2020 at 23:28

1 Answer 1


If your system boots at all, you can always switch to a terminal and back to the DE with the Ctrl + Alt + F1, ... + F2, etc. key combo. There is no need to edit grub.

From a terminal you can edit the file you need then reboot.

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