From 40e3a0145916782c96ece6a439e36834579a27f6 Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Tue, 7 Apr 2015 15:23:24 +0200
Subject: [PATCH] and 2c89ec5, keep backend running.

---
 gtk2_ardour/engine_dialog.cc | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/gtk2_ardour/engine_dialog.cc b/gtk2_ardour/engine_dialog.cc
index a7ef061d17..c88c836dfe 100644
--- a/gtk2_ardour/engine_dialog.cc
+++ b/gtk2_ardour/engine_dialog.cc
@@ -324,7 +324,10 @@ void
 EngineControl::on_show ()
 {
 	ArdourDialog::on_show ();
-	backend_changed ();
+	if (!ARDOUR::AudioEngine::instance()->current_backend() || !ARDOUR::AudioEngine::instance()->running()) {
+		// re-check _have_control (jackd running) see #6041
+		backend_changed ();
+	}
 	device_changed ();
 	ok_button->grab_focus();
 }