ice1712 noise

[Anthony <avan@uwm.edu>]

Hi, I've been hearing for some weeks now a very high
frequency, quiet crackling distortion when using my
delta44 on playback. This is with driver versions
0.9.8 and 1.0.2.

Symptoms:
* It only occurs on playback.
* It is not always present, but once it manifests
  it is consistent.
* I've ruled out external gear by swapping everything
* It cannot be recorded...i.e. if i use jack capture
  while it is happening, and playback on my other
  card I do not hear it
* I have been able to reproduce it with alsaplayer
  using the hardware layer (so not a jack problem).
* shutting down alsa apps and restarting the drivers
  fixes the problem until it reoccurs. It can take
  a long to to resurface.
* Of course, there is no way for me to rule out the
  card itself as being the problem.
* Other than driver changes, my system has been
  a rather stable 2.4.21 kernel.

I wonder if there was significant changes to the driver
that someone might suggest an earlier driver version to
try. TIA.

--ant


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