[wdmaudiodev] DMUS Port Init Failure

  • From: Philip Lukidis <plukidis@xxxxxxxxxxxxx>
  • To: "wdmaudiodev@xxxxxxxxxxxxx" <wdmaudiodev@xxxxxxxxxxxxx>
  • Date: Thu, 23 Dec 2010 10:41:37 -0500


There is an issue with my DMus MIDI (CLSID_PortDMus) driver initialization on a 
third party machine to which I have no access.  WPP traces gathered by the 
third party via Logman indicate that the IPort::Init interface failed with 
status:0xc0000034(STATUS_OBJECT_NAME_NOT_FOUND).  My own miniport was 
successfully created just prior to this call.  Now this only occurs on the 
machine's USB 3 port, and there is no issue on the standard EHCI controller 
port.  I confess I'm not even sure to which name the error refers; it cannot be 
the subdevice name registered via PcRegisterSubdevice, as that would be called 
after IPort::Init:

Could anyone shed any light on just what the failure could be?

thank you,

Philip Lukidis

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