Import initial Hyprland HDMI recovery implementation

scripts/revive-monitor-fix.sh

@@ -0,0 +1,77 @@
+#!/usr/bin/env bash
+set -u
+
+LOGTAG="revive-monitor-fix"
+CONFIG_FILE="${XDG_CONFIG_HOME:-$HOME/.config}/revive-monitor/config.env"
+
+# Defaults. Override in ~/.config/revive-monitor/config.env
+MONITOR="HDMI-A-2"
+HDMI_SETTLE_SECONDS="5"
+VT_SWITCH_DELAY_SECONDS="1"
+VT_RETURN_SETTLE_SECONDS="2"
+
+if [[ -r "$CONFIG_FILE" ]]; then
+    # shellcheck disable=SC1090
+    source "$CONFIG_FILE"
+fi
+
+GRAPHICAL_VT="${1:-}"
+STATE_DIR="${XDG_RUNTIME_DIR:-/tmp}/revive-monitor"
+LOCK_FILE="$STATE_DIR/fix.lock"
+
+mkdir -p "$STATE_DIR"
+
+log() {
+    logger -t "$LOGTAG" -- "$*"
+}
+
+run_quiet() {
+    "$@" >/dev/null 2>&1
+}
+
+if ! [[ "$GRAPHICAL_VT" =~ ^[1-9][0-9]*$ ]]; then
+    log "No valid graphical VT supplied - recovery aborted"
+    exit 0
+fi
+
+if [[ "$GRAPHICAL_VT" -eq 1 ]]; then
+    TEMP_VT=2
+else
+    TEMP_VT=1
+fi
+
+exec 9>"$LOCK_FILE"
+if ! flock -n 9; then
+    log "Recovery already running - skipping"
+    exit 0
+fi
+
+log "Recovery started for $MONITOR on VT $GRAPHICAL_VT"
+
+sleep "$HDMI_SETTLE_SECONDS"
+
+run_quiet hyprctl dispatch dpms on "$MONITOR"
+run_quiet hyprctl dispatch focusmonitor "$MONITOR"
+
+sleep 1
+
+log "VT refresh: $TEMP_VT -> $GRAPHICAL_VT"
+
+if ! sudo -n /usr/bin/chvt "$TEMP_VT"; then
+    log "Failed to switch to temporary VT $TEMP_VT"
+    exit 1
+fi
+
+sleep "$VT_SWITCH_DELAY_SECONDS"
+
+if ! sudo -n /usr/bin/chvt "$GRAPHICAL_VT"; then
+    log "Failed to return to graphical VT $GRAPHICAL_VT"
+    exit 1
+fi
+
+sleep "$VT_RETURN_SETTLE_SECONDS"
+
+run_quiet hyprctl dispatch dpms on "$MONITOR"
+run_quiet hyprctl dispatch focusmonitor "$MONITOR"
+
+log "Recovery completed for $MONITOR"