This is one mystery that I have failed to crack.

in xorg.conf

Section "ServerFlags" Option "blank time" "0" Option "standby time" "0" Option "suspend time" "0" Option "off time" "0" EndSection

in the XFCE gui set everything to never.

But the freakin thing will go into standby without mouse or keyboard activity.

Monitor is a HDMI TV. The Monitor DOES NOT go into standby and will show check HDMI input. As an added consolation, the behaviour is the same with a regular TV with VGA input and a regular vga monitor.

Motherboard Intel and AMD.

Any suggestions.