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原标题:Check if display is powered on

是否有办法检查显示是否在气球上掌权。 我曾尝试过Xrandr和xset,但两人都没有向我提供任何监测权力的信息。 我们可以使用xrandr确定,真线电缆是否连接起来,但如果不连接电力。 我需要这样做,因为我们的许多拉布系统仅仅因为有人从电线上提取电线,就没有使用。

-- Jatin

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