[dimdisplay] Waits a bit display to wake-up

Authored by anthonyfieroni on Jan 14 2019, 6:17 PM.

Description

[dimdisplay] Waits a bit display to wake-up

Differential Revision: https://phabricator.kde.org/D17874

Signed-off-by: Anthony Fieroni <bvbfan@abv.bg>