[freekobo]

Originally Posted by Fabry

For me it not works.
Stand-by statement appears for less than 1 sec and then it vanishes.
After this touchscreen is still active and AuraHD is not in stand-by mode but only with frontlight off.

I had this same problem. I fixed it by opening \.kobo\\koreader\frontend\ui\uimanager.lua in notepad++ and changing the following at (changed lines 300 and 303) the end of the file from;

			input_event == "Suspend" then
				UIManager:show(InfoMessage:new{
					text = _("Standby"),
					timeout = 1,
				})
				Device:prepareSuspend()
				UIManager:scheduleIn(0.5, function() Device:Suspend() end)
			elseif (input_event == "Power" and Device.screen_saver_mode) or
			input_event == "Resume" then
				Device:Resume()
			else
				self:sendEvent(input_event)
			end
		end
	end
end

to;

			input_event == "Suspend" then
				UIManager:show(InfoMessage:new{
					text = _("Standby"),
					timeout = 4,
				})
				Device:prepareSuspend()
				UIManager:scheduleIn(2, function() Device:Suspend() end)
			elseif (input_event == "Power" and Device.screen_saver_mode) or
			input_event == "Resume" then
				Device:Resume()
			else
				self:sendEvent(input_event)
			end
		end
	end

basically the timeout & scheduleIn value are increased.
Hope this helps.