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Windows 7 Thread, Optiplex 7010 / Realtek HD Audio Configuration (Rear Port to Mic In) in Technical; Hi, I'm having some issues trying to make the rear port (Blue/Pink) of the on-board Realtek HD Audio on a ...
  1. #1

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    Optiplex 7010 / Realtek HD Audio Configuration (Rear Port to Mic In)

    Hi,

    I'm having some issues trying to make the rear port (Blue/Pink) of the on-board Realtek HD Audio on a Dell Optiplex 7010 default to [MIC IN].
    By default, when something is plugged to this port, a prompt appears asking whether it should be used as a [LINE IN] or a [MIC IN], but we have 3.5mm stereo leads permanently plugged in which allows headsets to be more accessible etc.

    I resolved this same problem with previous models of Dell Optiplex (760,780 etc) that used Analog Devices and used GPP to change 5 registry settings; but the Realtek HD Audio is proving a bit more challenging!

    After comparing before/after registry snapshots I have identified 4 registry keys that change when alternating between [LINE IN] and [MIC IN], as well as being able to disable the prompt screen too.

    They are:

    Disable JDPopup
    HKEY_CURRENT_USER\Software\Realtek\RtDCpl64\Genera l\JDPopup 0x00000000

    [LINE IN]
    HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\MMD evices\Audio\Capture\{37a7af77-2f9a-423c-94bb-9f2312376fcb}\DeviceState: 0x00000001
    HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\MMD evices\Audio\Capture\{7dcd1141-9496-46dd-b91a-d5e5bb17c12d}\DeviceState: 0x00000008
    HKLM\SYSTEM\CurrentControlSet\Control\Class\{4D36E 96C-E325-11CE-BFC1-08002BE10318}\0000\Settings\Drv5985_DevType_0269_S S10280577\Pin19: 00 00 00 00


    [MIC IN]
    HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\MMD evices\Audio\Capture\{37a7af77-2f9a-423c-94bb-9f2312376fcb}\DeviceState: 0x00000008
    HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\MMD evices\Audio\Capture\{7dcd1141-9496-46dd-b91a-d5e5bb17c12d}\DeviceState: 0x00000001
    HKLM\SYSTEM\CurrentControlSet\Control\Class\{4D36E 96C-E325-11CE-BFC1-08002BE10318}\0000\Settings\Drv5985_DevType_0269_S S10280577\Pin19: 01 00 00 00

    After adding these to a test GPP, on a test computer it works fine (albeit a reboot was required). The problem was when I went to test the solution on some production computers.

    It was soon apparent that two of the registry entries had different key identifiers/field names for HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\MMD evices\Audio\Capture\{THIS_VALUE_VARIES_FROM _PC_TO_PC}\DeviceState:

    It shouldn't be this difficult! I just want the Realtek HD Audio to permanently default to [MIC IN] (and disable the prompt <-- this bit I can do!) for all users.

    Many Thanks,
    Last edited by MYK-IT; 14th November 2013 at 01:59 PM.

  2. #2

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    Resolved...by installing the latest, and updated Audio Driver from Dell website; configuring (logged in as a Administrator) the rear port as [MIC IN] and then removing any locally cached profiles.

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