X-Git-Url: https://git.ralfj.de/lilass.git/blobdiff_plain/8d8ac3226f3669f8524eef50161ae7241a808d7e..012442b93e9c29f03b0fd1af417e8b681a42673b:/dsl.py

diff --git a/dsl.py b/dsl.py
index 606809c..13a97f8 100755
--- a/dsl.py
+++ b/dsl.py
@@ -192,23 +192,22 @@ def classifyConnectors(allConnectors):
 
 # if we run top-level
 if __name__ == "__main__":
+    # parse command-line arguments
+    parser = argparse.ArgumentParser(description='easy Display Setup for Laptops')
+    parser.add_argument("-f", "--frontend",
+                        dest="frontend",
+                        help="The frontend to be used for user interaction")
+    parser.add_argument("-r", "--relative-position",
+                        dest="rel_position", choices=RelativeScreenPosition.__names__.keys(),
+                        help="Position of external screen relative to internal one")
+    parser.add_argument("-i", "--internal-only",
+                        dest="internal_only", action='store_true',
+                        help="Enable internal screen, disable all the others (as if no external screen was connected")
+    cmdArgs = parser.parse_args()
+    
+    # load frontend
+    frontend = getFrontend(cmdArgs.frontend)
     try:
-        # parse command-line arguments
-        parser = argparse.ArgumentParser(description='easy Display Setup for Laptops')
-        parser.add_argument("-f", "--frontend",
-                            dest="frontend",
-                            help="The frontend to be used for user interaction")
-        parser.add_argument("-r", "--relative-position",
-                            dest="rel_position", choices=RelativeScreenPosition.__names__.keys(),
-                            help="Position of external screen relative to internal one")
-        parser.add_argument("-i", "--internal-only",
-                            dest="internal_only", action='store_true',
-                            help="Enable internal screen, disable all the others (as if no external screen was connected")
-        cmdArgs = parser.parse_args()
-        
-        # load frontend
-        frontend = getFrontend(cmdArgs.frontend)
-        
         # load connectors and classify them
         connectors = getXrandrInformation()
         (internalConnector, externalConnectors) = classifyConnectors(connectors)
@@ -253,9 +252,12 @@ if __name__ == "__main__":
         
         # make sure the internal screen is really, *really* turned on if there is no external screen
         if not hasExternal:
-            backlight = float(subprocess.check_output(["xbacklight", "-get"]).strip())
-            if backlight == 0: # it's completely turned off, we better enable it
-                subprocess.check_call(["xbacklight", "-set", "100"])
+            try:
+                backlight = float(subprocess.check_output(["xbacklight", "-get"]).strip())
+                if backlight == 0: # it's completely turned off, we better enable it
+                    subprocess.check_call(["xbacklight", "-set", "100"])
+            except FileNotFoundError:
+                print("xbacklight has not been found, unable to turn your laptop backlight on.")
     except Exception as e:
         frontend.error(str(e))
         raise