16.04 - Screen goes black after a few seconds and comes back on after i press a button - Ask Ubuntu


my screen keeps going black if don't after few seconds, if move mouse or press key screen turns on right away. have looked in settings , changed causing problem keeps doing it. updated 16.04.i have restarted computer several times , problem still continues. know how fix this?

go system settings/brightness & lock, , change "turn screen off when inactive for:"

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go system settings/power, , check "suspend when inactive for:"

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