A real DP/HDMI unplug makes Hyprland tear down the layer-shell surfaces on the surviving monitor and not recreate them, so waybar and the wallpaper vanish there. A SIGUSR2 reload rereads waybar's config but does not recreate a bar that was already destroyed, so it left the laptop bar gone. Kill and restart waybar instead — a fresh process enumerates the current outputs and draws a bar on each — and add a settle delay before re-pushing the wallpaper so it lands on the settled geometry. Verified against a real DP-1 unplug: the LVDS-1 bar and wallpaper survive. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>