Manjaro deepin lightdm service won't start

I just installed manjaro deepin 64 bit latest version a few days ago , It worked fine for 1 day then next day it stopped booting giving ‘lightdm failed to start error’.
I’ve tried to replace lightdm with gdm and that worked.
I reinstalled lightdm but lightdm still couldn’t start.
I reinstalled Manjaro deepin again, installation was OK but as soon as I restarted my pc I got ‘lightdm has failed to start’ again.
Can someone please help me out.

See this

I don’t know which is the greeter that comes with deepin.
Also I did the debug command and it gives
’failed to find session configuration lightdm-gtk-greeter’
‘failed to create greeter session’

Check what’s the output of this command :

cat /etc/lightdm/lightdm.conf

And also this

pacman -Qs greeter

Put it in this format :


Umm i cant boot into my PC cuz Lightdm doesnt start how can i copy paste that big output ?

Just tell me what program did you see from the command pacman -Qs greeter

local/deepin-session-ui (deepin)
Deepin desktop-environment - Session UI module

It looks like you don’t have greeter installed. Try installing these :

sudo pacman -S lightdm-gtk-greeter lightdm

After this I tried ‘sudo systemctl status lightdm’ and it still gives
’failed to start lightdm’
Did the debug command and it suddenly showed a login screen, I logged in and the screen is black with just the cursor showing

No, no. Deepin has its own greeter.

must have
1 Like

I just realized that the second I looked twice on deepin-session-ui. Sorry I messed up again :sob:

@mahaveer, please edit the /etc/lightdm/lightdm.conf file :

sudo nano /etc/lightdm/lightdm.conf

Looked at the line greeter-session, uncomment it ( remove the # in front it). And add lightdm-deepin-greeter :


wow i rebooted and i got the weird looking login screen but manjaro started. I can open my browser and terminal so, before i do something new ( which might make be unable to login again ) it there any command’s output you need ? :smiley:

just did
sudo nano /etc/lightdm/lightdm.conf
and then
and the login screen looks like before too! thanks a lot :smiley:


Don’t thank me. Thank @eugen-b for that :grin:


1 Like

thank you @eugen-b :smiley:

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