diff --git a/CMakeLists.txt b/CMakeLists.txt
index 79522fa9..1b052e9a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -152,6 +152,8 @@ endif()
 # which doesn't seem to exist; but we only need -lmatio, so force it here
 set(MATIO_LIBRARIES -lmatio)
 
+find_library(PTHREAD_LIBRARIES pthread)
+message("PTHREAD " ${PTHREAD_LIBRARIES})
 set(LIBOSC_LIBS
 	${GLIB_LIBRARIES}
 	${GLIBCONFIG_LIBRARIES}
@@ -168,6 +170,7 @@ set(LIBOSC_LIBS
 	${LIBAD9361_LIBRARIES}
 	${LIBAD9166_LIBRARIES}
 	dl
+	${PTHREAD_LIBRARIES}
 )
 
 configure_file(config.h.cmakein ${CMAKE_CURRENT_SOURCE_DIR}/config.h @ONLY)
@@ -246,6 +249,7 @@ target_link_libraries(oscmain PRIVATE
 	${GTK_LIBRARIES}
 	${LIBIIO_LIBRARIES}
 	osc
+	${PTHREAD_LIBRARIES}
 )
 set_target_properties(oscmain PROPERTIES OUTPUT_NAME osc)
 
diff --git a/dialogs.c b/dialogs.c
index 527c47af..38de865d 100644
--- a/dialogs.c
+++ b/dialogs.c
@@ -498,19 +498,20 @@ static void refresh_usb(void)
 	if (!ctxs)
 		goto nope;
 
-#ifdef __APPLE__
-	// Scanning seems to be broken at the moment
-	goto nope;
-#endif
-
-
+	printf("filter%s\n", filter);
+	pthread_mutex_t lock;
+	printf("pthread_mutex_init%s\n", filter);
+	pthread_mutex_init(&lock, NULL);
+	printf("pthread_mutex_initialized%s\n", filter);
 	ret = iio_scan_context_get_info_list(ctxs, &info);
+	printf("ret%d\n", (int)ret);
 	if (ret < 0)
 		goto err_free_ctxs;
 	if (!ret)
 		goto err_free_info_list;
 
 	for (i = 0; i < (size_t) ret; i++) {
+		printf("info ctx%s\n", iio_context_info_get_description(info[i]));
 		tmp = strdup(iio_context_info_get_description(info[i]));
 		pid = strdup(iio_context_info_get_description(info[i]));
 
diff --git a/osc.c b/osc.c
index a9b7da3b..f7c92a11 100644
--- a/osc.c
+++ b/osc.c
@@ -736,6 +736,7 @@ int plugin_data_capture_of_plot(OscPlot *plot, const char *device, gfloat ***coo
 		osc_plot_set_markers_copy(plot, *markers_cp);
 
 		/* Wait til the copy is complete */
+		printf("g_mutex_lock\n");
 		g_mutex_lock(markers_lock);
 
 		/* if the lock is released, but the copy is still here
diff --git a/oscplot.c b/oscplot.c
index bf93e81d..d25e26f8 100644
--- a/oscplot.c
+++ b/oscplot.c
@@ -1247,6 +1247,7 @@ static void do_fft(Transform *tr)
 				sizeof(struct marker_type) * MAX_MARKERS);
 			*settings->markers_copy = NULL;
 			g_mutex_unlock(settings->marker_lock);
+			printf("g_mutex_unlock");
 		}
 	}
 }
@@ -1679,6 +1680,7 @@ bool cross_correlation_transform_function(Transform *tr, gboolean init_transform
 				sizeof(struct marker_type) * MAX_MARKERS);
 			*settings->markers_copy = NULL;
 			g_mutex_unlock(settings->marker_lock);
+			printf("g_mutex_unlock");
 		}
 	}
 
@@ -1758,6 +1760,7 @@ bool freq_spectrum_transform_function(Transform *tr, gboolean init_transform)
 					sizeof(struct marker_type) * MAX_MARKERS);
 				*settings->markers_copy = NULL;
 				g_mutex_unlock(settings->marker_lock);
+				printf("g_mutex_unlock");
 			}
 		}
 
@@ -3523,6 +3526,7 @@ static void capture_button_clicked_cb(GtkToggleToolButton *btn, gpointer data)
 
 		g_mutex_trylock(&priv->g_marker_copy_lock);
 		g_mutex_unlock(&priv->g_marker_copy_lock);
+		printf("g_mutex_trylock g_mutex_unlock");
 
 		g_signal_emit(plot, oscplot_signals[CAPTURE_EVENT_SIGNAL], 0, button_state);
 	}
@@ -4410,6 +4414,7 @@ static void plot_destroyed (GtkWidget *object, OscPlot *plot)
 	g_slist_free_full(plot->priv->ch_settings_list, (GDestroyNotify)g_free);
 	g_mutex_trylock(&plot->priv->g_marker_copy_lock);
 	g_mutex_unlock(&plot->priv->g_marker_copy_lock);
+	printf("g_mutex_trylock g_mutex_unlock");
 
 	g_signal_emit(plot, oscplot_signals[DESTROY_EVENT_SIGNAL], 0);
 }