Front headphone jack does not mute rear speakers


  1. FrostyWinnipeg
    Posts : 6
    Win 7 Ultimate x86
       New #1

    Front headphone jack does not mute rear speakers


    Asus M4A78-EM motherboard using Realtek drivers from Asus site.

    The front headphone jack did not work until I installed the Realtek drivers from the Asus site.

    Actually they didnt work until I checked on Disable Front Panel Detection. That got it going but the rear speakers are still playing.

    Mute the Rear Output Device When Front Input Is Plugged In is checked on.

    From what I've read this is simply a result of having the front audio panel set up as AC97 instead of HDA. 5 wires versus 7(or is it 9)

    I'll include some pics. First one is how the wires are currently configured and the second is a page from the manual.

    ImageShack® - Online Photo and Video Hosting
    ImageShack® - Online Photo and Video Hosting

    With 2 extra pins on the left end of the front audio board not being used I'm wondering what they might be for? Are they not used or would running 2 wires from those pins to the Presence and Sense_send connectors on the audio header on the mb do anything.

    Or are there an extra 4 wires used on an HDA front panel? Presence, Sense_send, Sense1_Retur and Sense2_Retur.

    TIA
    Last edited by FrostyWinnipeg; 15 Mar 2011 at 02:50.
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  3. Dwarf
    Posts : 9,582
    Windows 8.1 Pro RTM x64
       New #2

    Hi FrostyWinnipeg and welcome to Windows 7 Forums

    Have a look at this: AC'97 and HD audio front panel layouts
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