--- a/layout/reftests/font-face/reftest.list
+++ b/layout/reftests/font-face/reftest.list
@@ -45,18 +45,18 @@ skip HTTP(..) == src-list-local-localize
 
 # postscript name lookup
 # fontconfig only supports postscript name lookup from 2.10.92, Android/B2G not supported
 skip-if(B2G||Mulet) fails-if(Android) random-if(gtkWidget) == src-list-local-ps.html src-list-local-full-ref.html # bug 773482
 # Mac-specific test of 100 weight faces
 random-if(!cocoaWidget) == helveticaneue-ultra.html helveticaneue-ultra-ref.html
 
 HTTP(..) == order-1.html order-1-ref.html
-pref(layout.css.unicode-range.enabled,true) HTTP(..) == order-2.html order-2-ref.html
-pref(layout.css.unicode-range.enabled,true) HTTP(..) == order-3.html order-3-ref.html
+pref(layout.css.unicode-range.enabled,true) random-if(gtkWidget) HTTP(..) == order-2.html order-2-ref.html # enable new linux font backend, bug 1180560
+pref(layout.css.unicode-range.enabled,true) random-if(gtkWidget) HTTP(..) == order-3.html order-3-ref.html # enable new linux font backend, bug 1180560
 HTTP(..) == multiple-in-family-1.html multiple-in-family-1-ref.html
 HTTP(..) == multiple-in-family-1b.html multiple-in-family-1-ref.html
 HTTP(..) != multiple-in-family-1.html multiple-in-family-1-notref.html
 HTTP(..) == prop-order-over-rule-order-1a.html prop-order-over-rule-order-2a.html
 HTTP(..) == prop-order-over-rule-order-1b.html prop-order-over-rule-order-2b.html
 HTTP(..) != prop-order-over-rule-order-1a.html prop-order-over-rule-order-1b.html
 skip-if(B2G||Mulet) HTTP(..) == cross-iframe-1.html cross-iframe-1-ref.html # bug 773482 # Initial mulet triage: parity with B2G/B2G Desktop