From 348631fedc93969c2e07a68b66809b7a72d7d256 Mon Sep 17 00:00:00 2001
From: BlackMark <me@blackmark.me>
Date: Fri, 17 Jul 2020 17:00:57 +0200
Subject: [PATCH] Only store valid sensor values

---
 AdaptiveBrightness/main_window.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/AdaptiveBrightness/main_window.cpp b/AdaptiveBrightness/main_window.cpp
index 93d33e4..8a88d37 100644
--- a/AdaptiveBrightness/main_window.cpp
+++ b/AdaptiveBrightness/main_window.cpp
@@ -298,7 +298,9 @@ void MainWindow::updateState()
 
         bool errorOccurred = false;
         for(auto& monitor: m_monitors) {
-            monitor.brightness = monitor.manualOverride ? monitor.brightness : brightness;
+            if(!std::isnan(brightness) && !monitor.manualOverride) {
+                monitor.brightness = brightness;
+            }
             if(!monitor.driver.setBrightness(monitor.brightness)) {
                 errorOccurred = true;
             }
@@ -306,7 +308,7 @@ void MainWindow::updateState()
         return !errorOccurred;
     };
 
-    auto brightness = 0.5f;
+    auto brightness = NAN;
 
     if(!getAverageSensorValue(brightness)) {
         enumSensors();