Bug 976544 - Intermittent browser_devices_get_user_media.js - disable on Linux Debug, rs=Gijs.

browser/base/content/test/general/browser.ini

@@ -213,6 +213,7 @@ skip-if = os == "mac" # bug 967013, bug 926729
 [browser_datareporting_notification.js]
 run-if = datareporting
 [browser_devices_get_user_media.js]
+skip-if = os == "linux" && debug # bug 976544
 [browser_discovery.js]
 [browser_duplicateIDs.js]
 [browser_drag.js]