I'm running my board with the debian jessie image provided by @igorpecovnik [1]. I've additionally installed lxwm. When I don't touch the mouse or keyboard for a while (in lxwm/X.org) the display is blanked and switched off. This is common for desktop systems, but usually one wake the display by moving the mouse or pressing the any-key on the keyboard. This unfortunately doesn't work in my A20-lime board.
Is there any other way of waking the display? Alternatively: how can I switch off such power mechanisms?
(I see, that the powersave is disabled on the official olimex image.)
[1] http://www.igorpecovnik.com/2014/11/18/olimex-lime-debian-sd-image/
If you want to disable to blanking/powersave, se my older post https://www.olimex.com/forum/index.php?topic=2586.msg15922#msg15922 (https://www.olimex.com/forum/index.php?topic=2586.msg15922#msg15922).
And yes, there is a way to disable the display by GPIO, because the displays have an enable pin. I don't know the correct pin on A20-Lime, but you can get it from the schematics or from the /etc/rc.local init script. There may be a problem with a weaker power sources (e.g. when running from a battery), see my another older post https://www.olimex.com/forum/index.php?topic=3737.msg15806#msg15806 (https://www.olimex.com/forum/index.php?topic=3737.msg15806#msg15806).
Thank you. Actually it is sufficient to set:
Section "ServerFlags"
Option "OffTime" "0"
EndSection