Re: Monitors not coming out of power save when turned off

From	Tim Woodall <debianuser@woodall.me.uk>
Newsgroups	linux.debian.user
Subject	Re: Monitors not coming out of power save when turned off
Date	2021-10-29 15:10 +0200
Message-ID	<DdzNU-4PU-3@gated-at.bofh.it> (permalink)
References	<DdxCq-3j0-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Fri, 29 Oct 2021, Mike wrote:

>
> The issue comes when I return.  If I turn the monitors back on and then
> move the mouse, everything powers back on.  If I happen to move the
> mouse before powering on the monitors, they do not come out of power
> save.  I beleive this is to do with X being able to detect the presence
> of the monitor and if it seen no monitors (because they are powered
> off), then it disables them.  I haven't found a way out of this mess,

I have a script that runs xrandr commands to put everything back. It
detects the monitors that are connected.

I used to autorun it from udev but I got into a tangle where it hung
during boot and was a right pig to find and fix what had gone wrong so
now I rely on manually running it when monitors change.

I can post it if useful but it's very specific to my setup.

(I'm HDMI rather than DP but I assume it's the same)

Tim.

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Thread

Monitors not coming out of power save when turned off Mike <debian@norgie.net> - 2021-10-29 12:50 +0200
  Re: Monitors not coming out of power save when turned off Joe <joe@jretrading.com> - 2021-10-29 13:10 +0200
  Re: Monitors not coming out of power save when turned off Tim Woodall <debianuser@woodall.me.uk> - 2021-10-29 15:10 +0200

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