From 3adc9e4ec096f8317ee058ded7bd76548239d968 Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Tue, 30 Jun 2020 03:36:52 +0200
Subject: [PATCH] Disable latency-measurement for half-duplex devices

This prevents excessive error popup dialog popups when
trying to measure latency for half-duplex devices.
---
 gtk2_ardour/engine_dialog.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gtk2_ardour/engine_dialog.cc b/gtk2_ardour/engine_dialog.cc
index 5dc6229ff0..cb674227a7 100644
--- a/gtk2_ardour/engine_dialog.cc
+++ b/gtk2_ardour/engine_dialog.cc
@@ -2920,6 +2920,8 @@ EngineControl::manage_control_app_sensitivity ()
 	} else {
 		control_app_button.set_sensitive (true);
 	}
+
+	lm_button_audio.set_sensitive (backend->can_measure_systemic_latency ());
 }
 
 void