If all nodes are connected through ethernet to each other (or at least one common node) you could go for OpenWRT’s ‘Dumb AP’ setup as well

Edit: Already mentioned here; https://feditown.com/comment/1980836

Maintainer has been absent for some time so kernel v6.11 and v6.12 isn’t supported OOTB, to get it to work with kernel v6.11 you need to pull the fix from: !48

Additionally you can try and force use amdgpu rather than radeon, by setting the kernel flags:

radeon.cik_support=0 radeon.si_support=0 amdgpu.cik_support=1 amdgpu.si_support=1 amdgpu.dc=1

Source

Device initalization failed according to the Xorg logs;

1. Dump your firmware version
2. Dump your kernel version
3. Dump your kernel logs (dmesg or journalctl -k)

Running: swaymsg for_window "[app_id=mpv] opacity 0.5"

Works as expected on my end, are you missing just executing for_window?

Note, you can also add multiple rules in the same execution, e.g.

for_window {
    [app_id=mpv] opacity 0.85
    [app_id=LibreWolf] opacity 0.85
}

Also, note that app_id of LibreWolf is capitalized in that manner. You can get that information [app_id, shell etc] by running swaymsg -t get_tree