Display turns off automatically

[beedish]

The issue is that my display goes off at random times, i.e. screen goes blank.
I still have control over the system as I open a terminal and shutdown the system using

shutdown now​

I generated this file using

sudo journalctl -b -1 | curl -F 'file=@-' 0x0.st​

I had this same issue when I was running Arch Linux but I switched to Kubuntu because I couldn't fix the Display issue.

Let me know if any more details are required