From 5e0cfb61376a3a0a7a5876fd0afecef0d5d697f0 Mon Sep 17 00:00:00 2001
From: Zach Pomerantz <zmp@umich.edu>
Date: Tue, 28 Mar 2017 15:34:13 -0400
Subject: [PATCH] short-circuit audio switching on missing device

---
 scripts/system/selectAudioDevice.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/scripts/system/selectAudioDevice.js b/scripts/system/selectAudioDevice.js
index bc7906712a..48ab7fea7f 100644
--- a/scripts/system/selectAudioDevice.js
+++ b/scripts/system/selectAudioDevice.js
@@ -129,6 +129,11 @@ function onDevicechanged() {
 }
 
 function switchAudioDevice(audioDeviceMenuString) {
+    // if the device is not plugged in, short-circuit
+    if (!~audioDevicesList.indexOf(audioDeviceMenuString)) {
+        return;
+    }
+
     Menu.menuItemEvent.disconnect(switchAudioDevice);
 
     var selection = parseMenuItem(audioDeviceMenuString);