WPP trace messages appear as blank lines in Debug Window RRS feed

  • Question

  • I'm testing WPP tracing. Built an empty WDF driver with basic WPP, and attempting to catch trace messages in the debug window.

    Setup is:
    Host (Win 8) runs Client (Win 8) on VirtualBox vm.
    Successfully setup (and tested) network debugging via VS.

    I Successfully attached WinDbg and showed all WPP messages as expected.
    But when I attach from within Visual Studio debug, the WPP messages don't show up.
    What arrives instead is a blank line.

    I successfully connect to client in Kernel Debug mode, and enable wmitrace updates.
    I point the debugger to the directory containing the necessary .tmf files.
    I do the same on WinDbg and WinDbg shows messages while VS does not.

    When I ask to dump the buffers I get this:


    kd> !wmitrace.logdump WPPTest
    (WmiTrace)LogDump for Logger Id 0x0e
    Processing c:\Users\lab_alglab\documents\visual studio 2012\Projects\TestWPP\Win8Debug\TestWPP.pdb
    Found Buffers: 2 Messages: 5, sorting entries

    Total of 5 Messages from 2 Buffers


    As you can see the lines appear but they are empty. 
    any ideas where to look for solutions?

    Sunday, January 6, 2013 11:58 AM

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