Problem installing SDDM

mattrbrousseau

Hi there

I’m having an issue with trying to switch from lightdm to SDDM. I have installed SDDM and ran

sudo systemctl disable lightdm
sudo systemctl enable sddm

It then tells me that the symbolic link has been created. I then reboot the computer but after getting to the black screen it just hangs. I can use ctl-alt-f2 to get into the command line where I can switch back to lightdm and my computer will boot again.

Does anyone have any ideas why this may be the case?

fernandomaroto

@mattrbrousseau
It seems to me that you did everything right…
Just in case try again:
sudo pacman -S sddm sddm-kcm
sudo systemctl enable -f sddm
reboot

And if you find the same error again try:
sudo systemctl start sddm
see if there are errors…

joekamprad

i would suggest to completely uninstall “Antergos-lightdm” to get sddm working well!

sudo pacman -Rsc lightdm lightdm-webkit2-greeter light-locker

disable all DM’s and first boot into cli > login as root > start sddm manually:

sudo systemctl disable sddm

reboot

login as user to TTY3 [Ctrl+Alt+F3] and start the journalview:
journalctl -f

open TTY4 [Ctrl+Alt+F4] login as root and start sddm:

systemctl start sddm

if this is working you can automaticly enable sddm systemctl enable sddm
If not get status:

systemctl status sddm

Go back to TTY2 and see what goes wrong…

mattrbrousseau

Thanks for your help @joekamprad and @fernandomaroto. It turns out that it was that I hadn’t downloaded the sddm-kcm package as well. I had looked up sddm on the arch wiki and didn’t notice anything about having to install it so I didn’t. Thanks