Turned off ALL power management EVERYTHING and it still turns off displays.
Turned off ALL Screen saver EVERYTHING and it still turns off the displays.
Uninstalled Power management and it still turns off displays.
INFO: Previous Xfce system did not have this problem. M.2 failed and reloaded a new clean install of Xfce. Now at the 5 minute mark the displays shut down.
So hidden SOMEWHERE in the system configuration is telling it to turn off displays at 5 minutes idle. WHERE???
It’s the screensaver.
Not if the Display don’t get any signal and the monitor went in standby.
At least this was happening with our latest ISO Previews.
@CX32
Are you talking about a blackscreen (screensaver) or no signal from monitor?
You mean it’s a bug? Then an inxi -zv8 is the place to start.
I meant the feature of screen blanking. Dpms is now controlled from the xfce screensaver settings. Not the most logical place if you ask me but it is what it is.
See the screen goes blank and the blue power light turn red.
Press any key or mouse and it wakes up.
No its not! Have turned OFF the screen saver with still 5 min turn off.
Have set screen saver to a hour and 5 min still turns off!
There is no display setting for screen saver.
So thing else is controlling this!
Then i am not sure. You can try to see if something from here helps (2)
Please post more information about screensaver and power manager settings
xfconf-query -lv -c xfce4-screensaver
xfconf-query -lv -c xfce4-power-manager
xset q | grep -A2 -e'Screen Saver' -e'DPMS'
I also have similar issue, in my case the display doesn’t turn completely off but the screen brightness reduces to minimal level.
Welcome to the forum! 
In that case, it’s a different issue, so please start your own thread in the appropriate category. 
There are three areas to control various aspects of screen blanking; it’s important to be aware of these and to ask questions that reference the controls correctly, so that others can better understand your difficulty.
Please find (below) screenshots of the relevant controls for configuring your Power Management, Screen Saver blanking and Lock Screen preferences.
Note that there are no other applicable options to configure within the GUI of XFCE.
- Power Manager → Display
- Screensaver Preferences → Screensaver → Blank screen
- Screensaver Preferences → Lock Screen
Duh ZERO help, already did that!
Solution that works.
xset -dpms (might need to install xset)
This lasts only for the login session then goes away
In Session and startup, add that command above to for every login.
I still think you oversaw something in the xfce config (you didn’t answer nikgnomic above) but sending commands directly to the x server and skipping xfce entirety will of course also work. How to adjust the timing or make dpms permanently off with config files is shown in the arch wiki linked above, point 2.
Posted 9 days ago, for the record