kanshi VS wlroots

Without digging into you problem, i just let you know one options/tool as an addition: https://github.com/emersion/kanshi

This works, but after a reload of the config the configuration is gone. Then I found this discussion and changed the line to:

Kanshi is not exactly what you're looking for but i stumbled across this when I was writing the dynamic display configuration page.

You should use different scale factors on each monitor. You can do it in your sway configuration, or use something like kanshi that automatically applies different settings based on what is connected.

If this fixes your problem you'll want to apply this fix: Disable Laptop screen upon closing screen. or you can use something like Automatic display profile switcher when you connect your external display to switch it to while also disabling your laptop screen.

I also heard of kanshi for monitor configuration, but I believe there's an open bug where sway reload breaks kanshi config... which kind of defeats the purpose.

kanshi should be able to do it.

Assuming your connected monitors may change - you plug another one in and then you want to move workspaces the new output: kanshi can help you with that. You can tell kanshi to execute commands when it matches a profile.

For this you can use kanshi.

>barrier has been unmaintained for a long time.

As if not having new features added for 2 years makes it stop working? barrier is perfectly fine on normal linux desktop installs. I actually use synergy 1.x personally which has been "unmaintained" for much, much longer. Except synergy 1.x will compile and run on anything from windows 98 to ubuntu 5 to debian 12. You can't get a waynergy or inputleap to compile on an OS more than 2 years old. And even then, as you say, it's crapshoot if the particular wayland will have libei; many like sway are actively hostile to it and never will: https://github.com/swaywm/wlroots/issues/2378

It looks like they actually patched it to filter those modes out, so presumably it worked out of the box and was considered undesirable: https://github.com/swaywm/wlroots/issues/3038

I haven't experienced any of those. The video game performance hit may be due to vsync, but I don't play games so I haven't noticed.

You can however use tinywl. It is an example Wayland compositor that can't do more than displaying one application.

Sway/wlroots has implemented this, but I can't find any discussion for KDE.

wlroots is archived on github. Is it abandoned? Just saying, that only means they moved git hosts :-D

A lot of compositors are based no the wlroots lirbary. So they are still sharing the development effort and have a common base, its just in the form of a library rather than a display server.

gamescope use wlroots