diff --git a/src/xpra/sound/wrapper.py b/src/xpra/sound/wrapper.py
index c24a457df0..e5edeca18e 100644
--- a/src/xpra/sound/wrapper.py
+++ b/src/xpra/sound/wrapper.py
@@ -165,6 +165,7 @@ def __init__(self, description):
 
     def start(self):
         subprocess_caller.start(self)
+        log("start() %s subprocess(%s)=%s", self.description, self.command, self.process.pid)
         glib.timeout_add(2500, self.verify_started)