Thanks! Manual installation worked. I noticed a bug (sort of) thought. Middle button (disable blanking) as well as 3rd button "Inhibid display blanking for..." takes effect only 30 second or so after turning on or off, so if I have blanking after 10 sec, then it still goes blank couple times. Nevertheless thank you for your efforts! Could be good, if you can add quick switch of the time after which the screen goes blank.