Index: /trunk/src/VBox/Devices/Audio/DevHDA.cpp
===================================================================
--- /trunk/src/VBox/Devices/Audio/DevHDA.cpp	(revision 87834)
+++ /trunk/src/VBox/Devices/Audio/DevHDA.cpp	(revision 87835)
@@ -1583,4 +1583,6 @@
     {
         const uint64_t tsNow = PDMDevHlpTimerGet(pDevIns, pStreamShared->hTimer);
+        if (!pStreamShared->State.tsTransferLast)
+            pStreamShared->State.tsTransferLast = tsNow;
         Assert(tsNow >= pStreamShared->State.tsTransferLast);