[orca-list] how to make display totally darg even on EFi machines?

["Mgr. Janusz Chmiel" <janusz chmiel volny cz>]

Debian accessibility Wiki inform users about interesting techniques, 
which allow them to make their display turned off even in X session. But 
one little app, which they have introduced do not support EFI computers. 
Their technique only work for older machines.
Sure, mate have some C app which is able to turn display off when time 
of inactivity have occurred. It do not turn on screen saver, you can 
remove it, but other little package really turn display totally off and 
it is blang at all. No only dimmed to 0 percentage of brightness.
The question is, how complex would be to modify some Gnome, Mate or 
other environment based module which can turn display off but display 
must stay to be turned off even if user is pressing keys, moving with 
mouse, ETC. The question is, if my dream can come true while working 
with most modern computers based on EFI. And if it is possible to 
develop The safe routine, so display will not be turning on and off 
every some Milliseconds as long as some integrated circuit will burn out 
totally. Display would had to really stay turned off and not on and of 
when ever I press some keys, or some app will draw something on display 
so display will be turned on again.
In The world of Android devices, it is possible, namely on some Samsung 
devices. It is not dim screen feature of Talkback. No, other function 
specific for Samsung devices, which really turn display totally off, not 
only dim it.
But I do not know who of C developers would have some time to think 
about my idea.