Re: PCM2707C + PCM1794A Crackle Problem

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Dario Ernst wrote:
> On 09/26/2014 09:07 AM, Clemens Ladisch wrote:
>> This might be a problem with the USB controller driver.  Which USB
>> port are you using?  Try a 2.0 port, and/or a USB hub, if
>> possible.
>
> With my latest test just now i have also tried every combination with
> every USB "hub" (Entry under a different "Bus" in lsusb -t) my system
> has as well as an additional single certain/constant USB 2.0 Port with
> an external and externally powered USB (2.0) hub. Again, nothing seems
> to solve the Problem :(.
>
> I have also tried different USB Ports and Samplerates/Bitrates under
> Windows. All of them worked. This again leads me to think that at
> least my motherboard hardware and/or IRQ/Interrupt-BIOS-settings
> regarding my USB device are at least roughly okay.

Indeed.

How exactly are you testing in Linux?
And what are the contents of /proc/asound/cardX/stream0 while playing?


Regards,
Clemens

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