Comment # 1 on bug 1120275 from Bart Van Assche

On my desktop sddm hangs after bootup. I'm using kernel version 4.19.12 and the
i915 display driver. This problem does not occur if I use the gdm display
manager. Which kernel version and which display driver are you using? Does
switching to another display manager help (update-alternatives --config
default-displaymanager && systemctl restart display-manager)?