Kernel 5.10.2-2 breaks lightdm

Hi there after upgrading to the 5.10.x kernel lightdm window manager failed to start.

Cinnamon Version 4.8.3
Cheers & Goodluck


lightdm is a display manager, not a window manager.
Can you start your session from TTY? To access, for example TTY3, you press Ctrl+Alt+F3
then as your user, run this command:

Share some more information about your system as described here:

you may want to check the logs in /var/log/lightdm. If you are using AMDGPU as driver, there is a known bug, and you have to add a setting to your grub config, to be able to boot on that kernel series. Does your PC boot on 5.9 or older kernel series? See also here for troubleshooting:

Since I upgraded to 5.10 it works for me :slight_smile:

I had the same problem and installing xf86-video-fbdev fixed it for me.
sudo pacman -S xf86-video-fbdev