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  • COM port errors "No operations reported in timeout period"

    Hello,

    Running the latest version of BIT I am getting a "No operations reported in timeout period" on random COM ports. It can happen on any of the 6 COM ports on this board. If I try to re-start BIT, it will report that the just failed COM port is in use. I have to re-boot the machine in order to test again.

    System specifics:

    IBT MI802N 1.6GHz Atom based motherboard.
    Windows 7 embedded pro x32 SP1
    4GB memory.

    Any ideas come to mind?

    Thanks.
    Jay W.
    Diagnostic Engineer
    Comark Corporation
    93 West St.
    Medfield, MA 02052
    http://www.comarkcorp.com

  • #2
    Might be that the CPU is too slow, or overloaded. Or it might be the COM port device driver software has crashed.

    Comment


    • #3
      Originally posted by David (PassMark) View Post
      Might be that the CPU is too slow, or overloaded. Or it might be the COM port device driver software has crashed.
      Thanks for the answer.

      I tried just running the COM ports themselves at 100% duty cycle and it failed in 32 minutes.
      Previously, I was running all the tests (2D, 3D, CPU, memory, disk drive, and Passmark CD) at 50%. The failure would take quite a while to manifest itself; anywhere between 15 to 25 hours or so. The COM port driver is the built-in Microsoft one. BIT version 5.3 (1036) also fails. I think I'll try running under XP and see if it fails as well. If it does, I think that would rule out a default driver issue.
      Jay W.
      Diagnostic Engineer
      Comark Corporation
      93 West St.
      Medfield, MA 02052
      http://www.comarkcorp.com

      Comment


      • #4
        Originally posted by Comark Corp View Post
        Thanks for the answer.

        I tried just running the COM ports themselves at 100% duty cycle and it failed in 32 minutes.
        Previously, I was running all the tests (2D, 3D, CPU, memory, disk drive, and Passmark CD) at 50%. The failure would take quite a while to manifest itself; anywhere between 15 to 25 hours or so. The COM port driver is the built-in Microsoft one. BIT version 5.3 (1036) also fails. I think I'll try running under XP and see if it fails as well. If it does, I think that would rule out a default driver issue.
        As it turns out, Windows XP does not fail. Only Windows 7 and Windows 8 do. The problem turned out to be the default serial.sys driver that comes with the O/S. The board manufacturer supplied a patched serial.sys from Fintek that seems to correct the issue. I tested a few other boards we have for the bug, and it seems that only Fintek devices get the error. The following chips all seem to exhibit the problem:
        F81866AD
        F81216DG
        F71869AD
        Jay W.
        Diagnostic Engineer
        Comark Corporation
        93 West St.
        Medfield, MA 02052
        http://www.comarkcorp.com

        Comment


        • #5
          Thanks for the follow up.
          This will surely help others who have the same problem.

          Comment


          • #6
            Interesting that when I search for the word Fintek, this thread doesn't appear in the search results.
            Jay W.
            Diagnostic Engineer
            Comark Corporation
            93 West St.
            Medfield, MA 02052
            http://www.comarkcorp.com

            Comment


            • #7
              Should be OK now. The search index was out of date.

              Comment


              • #8
                Hi Jay,
                Where can I find the driver? I wasn't able to locate it on Fintek's web-site.

                Thanks

                Comment


                • #9
                  Originally posted by mrudloff View Post
                  Hi Jay,
                  Where can I find the driver? I wasn't able to locate it on Fintek's web-site.

                  Thanks
                  Do you have access to Usenet binary groups? I could post it there and you could use
                  This search engine to find it:
                  http://www.binsearch.info/
                  Jay
                  Jay W.
                  Diagnostic Engineer
                  Comark Corporation
                  93 West St.
                  Medfield, MA 02052
                  http://www.comarkcorp.com

                  Comment

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