Lightdm breaks after update

Software & Operating Systems Linux
1

Hello guys.

After upgrading my PC froze right after finishing. After grub i either get a black screen with blinking cursor in the top left corner or “Failed to start Light Display Manager”.
I already tried reinstalling xorg, lightdm (and tried gtk, sddm), and gpu drivers. Nothing. Still “Failed to start Light Display Manager”. Any ideas?

Xorg log: sprungeDOTus/mfBhc0
lightdm log: sprungeDOTus/Rm3INy
journalctl -b log: sprungeDOTus/YVpvyH

Please suggest any idea so a linux noob would understand it. Thank you!

2

First, welcome.

Next, which distro are you using?

I’m inclined to get you down to a bare system and build back up from that, but as a new user, that might be too much for now. So for starters, see if this works for you: purge lightdm from your system, then install xdm instead.

Let’s not get too far ahead, take a step at a time!

3

Thanks.

I use manjaro. Xdm can’t be installed. It is not found.

OK got it fixed somehow! Here is what i did after bootup/reboot:

systemctl disable lightdm
sudo pacman -Syu
sudo pacman -R lightdm lightdm-gtk-greeter
pamac install xorg-server-git xf86-video-amdgpu-git
sudo pacman -S lightdm lightdm-gtk-greeter
systemctl enable lightdm-gtk-greeter
systemctl enable lightdm
reboot

Cheers!

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4

I have the same issue and for me it was caused by the newest Kernel. Just select an older Kernel at the start-up screen and you should be fine.

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