Windows 8 and 8.1 Forums


DPC issues, crackling sound, not sure if solved

  1. #1


    Posts : 11
    Windows 8.1

    DPC issues, crackling sound, not sure if solved


    Hello all,

    My sound had recently become stuttery, crackling, and sort of metallic sounding, maybe 'tinny' is the word. This is an issue both through HDMI and headphones. I've tried reinstalling and updating my drivers, I've cleaned a fairly nasty bit of dust from between the heatsink and fan, I've ran LatencyMon which prompted me to try DriverBooster which installed things I was sure I already had, and finally I've flashed the BIOS to the latest version. I'm not getting immediate audio issues at the moment but LatencyMon still reports in the 'red' on 'process latency', ISR and DPC 'routine execution times'. When idle I still get high 'hard pagefault resolution time'. Among the culprits, according to LatencyMon, are USBPORT.SYS, tcpip.sys, ndis.sys, ataport.sys and HDAudBus.sys. I did read that some of these monitoring programs incorrectly report activity on Windows 8 so maybe I HAVE fixed it? Any help would be very much appreciated.

    Thanks!

      My System SpecsSystem Spec

  2. #2


    Stuttering, crackling, etc has been an issue in Win 7 and to a lesser degree in Win 8, from posts I've seen. There is no "one fix" for the problem. Drivers are one area that has helped, both the Sound drivers and Video drivers. Wi-Fi connections are another known cause. Another issue is that sound is considered a "low priority" Interrupt device and is placed on a Shared Interrupt (IRQ) with a higher priority device. The sound can be "interrupted" by the higher priority device and thus stuttering.

    Latency Mon is supposed to work in Win 8, but DPC latency may or may not show sound problems. The DPC Latency Checker is NOT Win 8 compatible. I have a recording studio and very attuned to audio latency problems, not "system" latency problems that the DPC latency programs address.

    Finding the problem will take a bit of time. First issue is the sound driver. You should have the correct sound driver supplied by the Motherboard vendor (preferred driver).
      My System SpecsSystem Spec

  3. #3


    Posts : 11
    Windows 8.1


    Hi fireberd, thanks for replying,

    I've run the MSI LiveUpdate utility and have installed everything essential, such as the outdated video and audio drivers.
      My System SpecsSystem Spec

  4. #4


    If that doesn't help uninstalling/reinstall the sound may help. Go to the Device Manager. RIGHT click on the entry for your sound device and the LEFT click "Uninstall" DO NOT uninstall the drivers. Then restart the PC and when Windows starts it will detect and reinstall the sound. Sometimes Windows will put the sound on a different shared IRQ and help the problems.
      My System SpecsSystem Spec

  5. #5


    Posts : 11
    Windows 8.1


    I have both the generic Windows 'High Definition Audio Device' and a 'Realtek High Definition Audio' under 'sound, video and game contollers'. I'm assuming that's to be expected.
      My System SpecsSystem Spec

  6. #6


    Depends on what the High Definition Audio Device is. RealTek is your PC sound card.

    If the High Definition Audio Device is also for your sound card, you need to uninstall that. If its for the HDMI audio, only use that if there is no AMD driver.

    Generally, High Defintion Audio Device or "Codec" means a generic driver and not the actual device's driver.
      My System SpecsSystem Spec

  7. #7


    Posts : 11
    Windows 8.1


    Yeah, Realtek installed with the software for my Radeon card, which also has the HDMI out. I was wondering why I would need the other, generic driver.
      My System SpecsSystem Spec

  8. #8


    That doesn't sound correct. I had an AMD video card with built in audio for HDMI and the AMD Catalyst Control Center/drivers installed the AMD High Definition Audio Codec, for the HDMI sound.

    The RealTek, which is the sound on the motherboard would be for the PC sound only.
      My System SpecsSystem Spec

  9. #9


    Posts : 11
    Windows 8.1


    I downloaded a Realtek driver earlier to see if it would help in any way, labeled 'ATI HDMI Audio Device', I must have confused myself. I want to say I did have a driver under the sound controllers that was specifically 'AMD High Definition Audio' but I've tried to remove and reinstall so many drivers I'm not even sure.
      My System SpecsSystem Spec

  10. #10


    Your getting the "RealTek and "AMD" confused. RealTek is the PC sound chip, for regular PC sound (speaker, headphones, etc). AMD is ONLY for HDMI audio.
      My System SpecsSystem Spec

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