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How to disable the blanking of screen after idle timeout in linux

You may have noticed the blanking of screen after an idle timeout. This may be annoying while you are watching a movie. So If you want to disable the X screen blanking that comes up unexpectedly while you’re watching a movie in MPlayer or …,
Type this at terminal

setterm -powersave off -blank 0

To make the change permanent, add the following to your ~/.xinitrc file:

$ vi .
add this line
setterm -blank 0 -powersave off -powerdown 0 xset s off

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