this post was submitted on 29 Feb 2024
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In a multi monitor set up, when a screen connected to display port goes to sleep my computer treats it like that screen was disconnected - meaning all my open applications get shoved from one screen to another. I've also used HDMI to avoid that.
On the other hand, when I turn off my second monitor (on HDMI), all my apps stay on that screen, meaning I have to manually move them over to my main monitor where I can actually see them.
And if my DisplayPort monitor is off and everything's on my second monitor, when I turn the main one back on all the windows go back to where they used to be (al least on Plasma Wayland).
That's interesting, though not my experience. If a monitor is turned off then the PC picks up that it has disconnected.
The scenario I described occurs when the OS (Windows) sleeps the screen after inactivity. It could be a function of the laptop, of the monitor, or of the cables. In my set up using HDMI over display port solves it.
Ugh, so THAT'S why it happens? It's quite irritating, and only rebooting seems to fix it.