From eb75090b3733c2410ef80f7478bf3896f5065858 Mon Sep 17 00:00:00 2001
From: = <=>
Date: Tue, 24 Sep 2024 00:54:06 -0400
Subject: [PATCH] improved multi-gpu screen brightness measurement

---
 led_system_monitor.py | 4 ++--
 monitors.py           | 8 +++++++-
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/led_system_monitor.py b/led_system_monitor.py
index 7788d8e..a69fad2 100644
--- a/led_system_monitor.py
+++ b/led_system_monitor.py
@@ -15,9 +15,9 @@ if __name__ == "__main__":
     # Right LED Matrix location: "1-3.3"
 
     # Set up monitors and serial for left LED Matrix
-    min_background_brightness = 8
+    min_background_brightness = 12
     max_background_brightness = 35
-    min_foreground_brightness = 30
+    min_foreground_brightness = 24
     max_foreground_brightness = 160
 
     cpu_monitor = CPUMonitor()
diff --git a/monitors.py b/monitors.py
index bfaff81..d5f93fa 100644
--- a/monitors.py
+++ b/monitors.py
@@ -129,6 +129,12 @@ def get_monitor_brightness():
         if os.name == 'nt':
             return wmi.WMI(namespace='wmi').WmiMonitorBrightness()[0].CurrentBrightness / 100.0
         else:
-            return int(open('/sys/class/backlight/amdgpu_bl1/brightness', 'r').read()) / 255.0
+            try: # First try the dGPU brightness
+                return int(open('/sys/class/backlight/amdgpu_bl2/brightness', 'r').read()) / 255.0
+            except: # If that doesn't work, try the iGPU brightness
+                return int(open('/sys/class/backlight/amdgpu_bl1/brightness', 'r').read()) / 255.0
     except Exception as e:
         return 1.0
+
+if __name__ == "__main__":
+    print(get_monitor_brightness())
\ No newline at end of file