reduce signal change logs when generating syn

ChangeLog.md

@@ -1,6 +1,8 @@
 # next (tbd)
 ## Buf Fixes
 * fix potentially invalid settings picked up from environment variables
+* fix potentially unnecessary arbitration start for non-enhanced proto
+* fix smaller issues in KNX integration
 ## Features
 * tbd
 

src/ebusd/bushandler.cpp

@@ -1094,9 +1094,13 @@ result_t BusHandler::setState(BusState state, result_t result, bool firstRepetit
     logDebug(lf_bus, "switching from %s to %s", getStateCode(m_state), getStateCode(state));
   }
   if (state == bs_noSignal) {
-    logError(lf_bus, "signal lost");
+    if (m_generateSynInterval == 0 || m_state != bs_skip) {
+      logError(lf_bus, "signal lost");
+    }
   } else if (m_state == bs_noSignal) {
-    logNotice(lf_bus, "signal acquired");
+    if (m_generateSynInterval == 0 || state != bs_skip) {
+      logNotice(lf_bus, "signal acquired");
+    }
   }
   m_state = state;