power: a lock problem is no longer said once the lock is held

modules/power/cmd/power/watcher.go

@@ -164,6 +164,9 @@ func (w *Watcher) inhibit(l Login1) {
 		return
 	}
 	w.lock = f
+	if strings.HasPrefix(w.issue, "no delay lock") || strings.HasPrefix(w.issue, "logind") {
+		w.issue = "" // solved: a problem that no longer holds is not said
+	}
 }
 
 // stillHeld says whether the lock's descriptor is still logind's reference; replaceable in tests.

modules/power/cmd/power/watcher_test.go

@@ -68,6 +68,15 @@ func TestALostLockIsTakenAgain(t *testing.T) {
 	}
 }
 
+func TestAProblemIsNoLongerSaidOnceTheLockIsHeld(t *testing.T) {
+	w := watcher(t, machine(t, nil), &bus{})
+	w.problem("no delay lock: Permission denied")
+	w.inhibit(&fakeLogin{})
+	if s := w.Snapshot(); !s.Inhibiting || s.Problem != "" {
+		t.Fatalf("%+v", s)
+	}
+}
+
 func TestStdinIsNeverTakenForALock(t *testing.T) {
 	if IsInhibitor(0) || IsInhibitor(1) || IsInhibitor(2) {
 		t.Fatal("a standard descriptor was taken for logind's lock")