Audio Crackling

Galahad · Nov 11, 2014

Hello,
I have sound crackling when I watch flash videos or audio. I have Windows 8.1 64 bits so I tried to run Windows Performance Analyzer but the version has changed and the commands too.
So I installed LatencyMon and I could have some informations.
The problem is that the top drivers that could cause latency are usbport and ndis. So I can't update them.
Could you help me if for instance I give you the log of LatencyMon (or other stuff)?
Thanks.

Galahad · Nov 14, 2014

Hello,
here is my XPERF trace file : http://ratm6.free.fr/CPU_galahad.rar
I hope you will help me with this. :)

Galahad · Nov 22, 2014

I give you my dxdiag.txt file : View attachment DxDiag_galahad.txt

wmorri · Nov 22, 2014

Hi,

Based on your dxdiag, I can see two drivers that need to be updated. Since you are having sound problems I will start with the sound driver and work from there.

Your realtek driver is out of date, and there is a newer version: RTKVHD64.sys - Driver Update Site: Realtek
Your video card driver is out of date and there is newer version, you can find the new version here Download Drivers

Lets start there and see if that helps at all.

Galahad · Nov 23, 2014

Hi,
I've already the latest version of realtek high definition audio driver (R 2.75).
And I already tried to update the amd display driver but it slows down my web browsing so I came back to the HP driver (I have a HP laptop).

But yesterday I added a parameter in Windows command prompt : bcdedit /set useplatformclock true
And the audio crackling has disappeared since that. I simply hope that that command won't create other issues sooner or later.

jcgriff2 · Nov 24, 2014

Galahad said:
...But yesterday I added a parameter in Windows command prompt : bcdedit /set useplatformclock true
And the audio crackling has disappeared since that....

Just curious as to where you learned of the command, please.

From MSDN:

BCDEdit /set
useplatformclock [ yes | no ]

Forces the use of the platform clock as the system's performance counter.

Note This option should only be used for debugging

http://msdn.microsoft.com/en-us/library/windows/hardware/ff542202(v=vs.85).aspx

I'm not sure how or why it would affect audio.

Regards. . .

jcgriff2

Galahad · Nov 25, 2014

Hi,
the useplatformclock parameter seems to reduce dpc latency. In fact I still have audio crackling but clearly less frequently.

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Audio Crackling

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wmorri

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jcgriff2

Co-Founder / AdminBSOD Instructor/ExpertMicrosoft MVP (Ret.)

Galahad

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Co-Founder / Admin
BSOD Instructor/Expert
Microsoft MVP (Ret.)