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I'm trying to design a system for our office (consisting of Ubuntu Desktop 18.04 LTS laptops and desktops), where remote access to the on-screen GUI can be combined with a local screen-blank, for privacy from co-workers.

Of all the tools I've trialed so far, the best ones seem not to support the screen blanking functionality, so I've been trying to devise my own method.

The result of xset dpms force standby is absolutely perfect, however I don't seem to be able to temporarily disable any wakeup functionality (the physical monitors reactivate as soon as any remote session input is detected).

I've tried echoing device codes to /proc/acpi/wakeup but that doesn't seem to be what's causing the screens to power back on.

Ryan Brierley
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1 Answers1

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To me, the best solution is to run xrandr --output ${display_name} --brightness 0. It will blank corresponding display. Do it for all connected displays.

To get display back, use --brightness 1.

zeroinfinity
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