How do i stop display going to sleep?

[thefrog]

Depending on the exact issue however this seems to be a fix for now. Certain Power Managers have stopped working with the screen display time out no matter the time it just turns off every 10 minutes.

DPMS on i3 -- screen timeout issues

This happened with the XFCE power manager update (Not the only power manager affected I understand MATE also has issues) If you want to turn off DPMS then you need put this command in an .xprofile under your user folder xset s off -dpms & Note this will turn off the automatic turn off every 10 minutes and set it to never turn off.