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
Could it be an issue with the Nvidia drivers, boot with acpi=off and then install the (proprietary) nvidia drivers and then reboot to see if it boots normally now?