to also make things a little easier, for those using docks / SSH or lapdocks if you find the device goes into suspend mode while its attached to power.... there is a widget that might work for you.
sourced from https://forum.pine64.org/showthread.php?tid=12909
I happened to long-press the desktop, and "Add Widgets" appeared
I pressed this, and tried adding the "Display Configuration" widget.
It had something called "Enable Presentation Mode", which I tried.
if instead your looking to change the timings then JasonG-FR in a post in the above mentioned thread explains what to change in the ~/.config/powermanagementprofilesrc file...
sourced from https://forum.pine64.org/showthread.php?tid=12909
I happened to long-press the desktop, and "Add Widgets" appeared
I pressed this, and tried adding the "Display Configuration" widget.
It had something called "Enable Presentation Mode", which I tried.
if instead your looking to change the timings then JasonG-FR in a post in the above mentioned thread explains what to change in the ~/.config/powermanagementprofilesrc file...