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Thread: noise from usb devices on M10K

  1. #1
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    noise from usb devices on M10K

    I get noise from from the analog audio output when using any usb device conected to my M10K it sounds like a modem data stream

    I am guessing it's a grounding problem does any one know what to do before I launch a full scale investigation

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    I read on another post that you can try grounding the ground of the sound ports from the PC. I have the same problem on mine and will be trying it out soon. Appears to work for others!

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    Magpie that post was about engine noise it's what is called a (ground loop) but that is not the problem

    my problem sounds like a modem data stream coming over the speakers when I move the mouse or use my Tira IR reciever

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    K guy's I got tired of waiting for some help so I got off my lazy but and took a look at it my self and after ripping my whole f___ing car appart I figured out it's the Mainboard the M10K's have a defect in them someware

    I figured it out because after trying everything and not having made any change in tone or affecting it at all I decided to checked my brothers M10K his is a desktop pc everything is different including the OS he runs 2K I run XP pro and his M10K dos the very samething so I emailed VIA 3 days ago

    but they have not wrote back yet it seems to be a driver issue like the AC 97 codec issue 3 years ago with version 4.1 it was the same problem to fix it you had to go back to version 3.8 does anyone know how to fix this problem would 3.8 work with a M10K with 6 ch & spdif ?

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    For what it's worth I also get noise on my sound output from the m/b. I have the same one as you. As I use an external USB sound device I don't get the problem in everyday use. I would if I went back to the regular sound ports.

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    ok you have a Epia M10000 and you get noise that sounds like clicks and scratches right ? what usb sound device do you have ?

    I am still waiting for a reply from VIA about this problem I am afraid that by the time they decide to email me I will have a P4 in my car

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    The USB sound device is a Sony Aux input unit for my head unit. It's called a XA-300. When plugged in it appears as a USB sound device.

    Looking through the forums I see that other people are also using other external devices although I do have completely different issues in that Winamp crashes evertime the USB sound device goes away i.e. changing to an alternative sound source from the head unit or going to and from standby. So I am working a solution to get around this.

    So right now I'm stuck between poor sound due to the noise from the regular sound card or winamp getting killed.

    And yes, I do get the scratching popping sound through the regular sound out.

  8. #8
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    I have the exact same problem and you won't get any help from VIA. I have been fighting them for months and it all seems to get stuck in an infinite loop. I tried disabling the onboard sound and I still get the pops, buzzes and clicks when it boots or when I move the usb mouse. I even uninstalled the audio codecs and disabled onboard sound but the noises were still there. I believe it is a defect and VIA will never address it on current models, maybe for future models they might. I did try a USB soundcard and the "fax-modem" noises were suppressed somewhat.

    One thing I noted was I was unable to produce the sounds when I had my M10k hooked up as a desktop. Maybe my car stereo system is sensitive and picks up everything or maybe it has to do with inadequate grounding... or even perhaps my desktop speakers just suck! But you say that your bro's mobo makes the same noises through desktop speakers??

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    my brother has desk top speaker so it is not very noticeable but in my car it is much louder because of the 600 watt amp I got

    I got like 15 pc's at my house all of them that have AC'97 got this same problem when using new drivers some use VIA chips and some use Realtek and some use other chips 3 of the PC's use other codec's 2 use C-media and 1 uses an old sis chip and they are quite as can be

    here is how to fix the AC'97 problem I did some more research you got to use the AC'97 version 3.1 or older driver and it dosent support spdif no one I have asked knows if there will be a problem with the spdif and the newer drivers so if any body knows please post

    the explanation for this problem as I have been told is that after version 3.1 a bug got written to the code that ports the usb data stream into the audio chip and it has never been fixed and 5 versions latter no one knows why

    I guess if you got a desktop speaker setup it's fine because even with the volume cranked up all the way you can bearly hear it because the desktop speakers don't have a high power amp in them but in our cars were screwed

  10. #10
    Maximum Bitrate ddogg_777's Avatar
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    so what you are saying is that I have to uninstall the Vinyl audio deck and use a different codec? If so, can I still get 5.1 channel sound?

    Oh, and what site has these available?

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