Исправлен ebuild для modemmanager

net-misc/modemmanager/files/01-org.freedesktop.ModemManager1.rules

@@ -0,0 +1,7 @@
+// Let users in plugdev group modify ModemManager
+polkit.addRule(function(action, subject) {
+    if (/^org\.freedesktop\.ModemManager1\.(Device\.Control|Contacts|Messaging|Location)$/.test(action.id) &&
+        subject.isInGroup("plugdev") && subject.active) {
+        return "yes";
+    }
+});