Added ddca_enable_force_slave_address called for ddcutil >= 1.2.1. Fixes #82.

Signed-off-by: Federico Di Pierro <nierro92@gmail.com>

Author: FedeDP

TODO.md

@@ -34,6 +34,7 @@
 - [x] add a page about monitor hotplugging (dep on ddcutil >= 1.2.0 and refresh time!)
 - [x] Investigate memleaks (related to ddca_redetect_displays()?) -> see here: https://github.com/rockowitz/ddcutil/issues/202
 - [x] Instead of 30s sleep, use an udev_monitor on drm subsystem?
+- [x] Force slave address: ddca_enable_force_slave_address. Fixes #82
 
 ### KbdBacklight
 - [x] call sd_bus_emit_object_added() sd_bus_emit_object_removed() When object path are created/deleted

src/modules/backlight2.c

@@ -108,6 +108,9 @@ MODULE("BACKLIGHT2");
             br_code = strtol(getenv("CLIGHTD_BL_VCP"), NULL, 16);
             m_log("Set 0x%x vcp code.\n", br_code);
         }
+#if DDCUTIL_VMAJOR >= 1 && DDCUTIL_VMINOR >= 2 && DDCUTIL_VMICRO >= 1
+        ddca_enable_force_slave_address(true);
+#endif
     }
 
     static void get_info_id(char *id, const int size, const DDCA_Display_Info *dinfo) {