[Xastir] Raspberry Pi 2 and xastir

[Steve]

I have  a new Raspberry Pi running Raspberian OS. The screen goes blank 
after a while and If I move the mouse or touch a key the screen comes 
back. In a previous version of Raspberry Pi with Raspberian OS I had it 
set up to stay on full time. I can't for the life of me remember how I 
did this. I have tried making changes in the screen saver and blanking 
to no avail. I have changed the files back to the original settings. Any 
ideas? Steve KB1CHU