Pops and clicks with DSD on Odroid C2

Support
1

Hi all
I have issues with pops and clicks when playing back DSD files. My setup is as follows:

  • Roon Core on PC with AMD Ryzen 7 1800X, plenty of RAM, Music on RAID0 array
  • Roon Bridge on Odroid C2 (latest dietpi)
  • Aune S16 DAC connected to the Odroid C2 via USB (capable of PCM384 and DSD128)
    The operation of the Odroid C2 and the Aune has been verified at all sample rates with Volumio for over a year

With PCM files up to 352.8, everything works, no pops and clicks. With DSD64 and DSD128 impossible to listen to music, constant pops and clicks (in around 1 second intervals). The signal path in roon shows purple dot, no DSP engaged

Here are the setting I use:

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Thanks for any help

3

A friendly Volumio Developer pointed me in the right direction by telling how this solved in Volumio
Add the following two lines to rc.local before “exit 0”:

/bin/echo 4 > /proc/irq/63/smp_affinity
/bin/echo 8 > /proc/irq/62/smp_affinity

That actually solved the problem. Smooth playback now.

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