fix(xrandr): Enable monitor support by default

Refs #280

cmake/build/options.cmake

@@ -69,7 +69,7 @@ option(WITH_XCOMPOSITE    "XCOMPOSITE support"         OFF)
 option(WITH_XKB           "XKB support"                ON)
 
 if(NOT DEFINED ENABLE_XRANDR_MONITORS)
-  set(ENABLE_XRANDR_MONITORS OFF CACHE STRING "Enable XRandR monitor feature (requires version 1.5+)")
+  set(ENABLE_XRANDR_MONITORS ON CACHE STRING "Enable XRandR monitor feature (requires version 1.5+)")
 endif()
 
 # }}}

src/x11/extensions/randr.cpp

@@ -84,6 +84,7 @@ namespace randr_util {
       return monitors;
     }
 
+#if ENABLE_XRANDR_MONITORS
     if (check_monitor_support()) {
       for (auto&& mon : conn.get_monitors(root, true).monitors()) {
         try {
@@ -94,6 +95,7 @@ namespace randr_util {
         }
       }
     }
+#endif
 
     for (auto&& output : conn.get_screen_resources(root).outputs()) {
       try {