it works

libs/main/io_devices/piiodevice.cpp

@@ -239,7 +239,7 @@ void PIIODevice::check_start(void * data, int delim) {
 	//cout << "check " << tread_started_ << endl;
 	if (open()) {
 		thread_started_ = true;
-		timer.stop();
+		timer.stop(false);
 	}
 }