I have Kubuntu 18.10 in which I installed XFCE.
I wanted to use xdm as my display manager. So i installed it and I activated it using `sudo dpkg-reconfigure xdm" and selecting xdm as my display manager.
But every time I reboot I am redirected to a black screen. I am able to do CTRL+ALT+F1, login as root in the terminal and restore LightDM, then reboot and gain access to a login screen.
What could be the problem? What debug information I need to provide? drivers
I have the NVIDIA proprietary driver
Here is the Ubuntu version:
lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 18.10 Release: 18.10 Codename: cosmic
and the Linux kernel version
uname -a Linux raffa-kubuntu 4.18.0-13-generic #14-Ubuntu SMP Wed Dec 5 09:04:24 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux