Serialize display recovery checks

config/dot/quickshell/services/Displays.qml

@@ -85,7 +85,8 @@ Singleton {
             if (!root.awaitingConfirmation)
                 return;
             if (root.revertQueued) {
-                root.performRevert();
+                if (!query.running)
+                    root.performRevert();
                 return;
             }
             if (exitCode !== 0) {
@@ -93,6 +94,7 @@ Singleton {
                 return;
             }
             verifyTimer.attempts = 0;
+            verifyTimer.ticks = 0;
             verifyTimer.restart();
         }
     }
@@ -104,17 +106,20 @@ Singleton {
             // success without applying a value, so exact readback decides.
             root.revertVerificationActive = true;
             revertVerifyTimer.attempts = 0;
+            revertVerifyTimer.ticks = 0;
             revertVerifyTimer.restart();
         }
     }
 
     Component.onCompleted: root.refresh()
 
-    function refresh(): void {
+    function refresh(): bool {
         if (!query.running) {
             query.generation = root.operationGeneration;
             query.running = true;
+            return true;
         }
+        return false;
     }
 
     function parse(text: string, generation: int): void {
@@ -411,26 +416,29 @@ Singleton {
     Timer {
         id: verifyTimer
         property int attempts: 0
+        property int ticks: 0
         interval: 120
         repeat: true
         onTriggered: {
-            attempts++;
-            if (attempts > 25) {
+            ticks++;
+            if (ticks > 50) {
                 root.revertWithMessage("The display did not apply that setting, so Panama restored the previous one.");
                 return;
             }
-            root.refresh();
+            if (root.refresh())
+                attempts++;
         }
     }
 
     Timer {
         id: revertVerifyTimer
         property int attempts: 0
+        property int ticks: 0
         interval: 120
         repeat: true
         onTriggered: {
-            attempts++;
-            if (attempts > 25) {
+            ticks++;
+            if (ticks > 50) {
                 stop();
                 root.revertVerificationActive = false;
                 root.revertGeneration = -1;
@@ -439,7 +447,8 @@ Singleton {
                 root.lastError = "The previous display setting could not be verified. Open Displays and restore it manually.";
                 return;
             }
-            root.refresh();
+            if (root.refresh())
+                attempts++;
         }
     }