(In reply to Takashi Iwai from comment #172)
> Thanks.  The problem with playback indicates that the delay correction isn't
> good for playback but only for capture.
> 
> Below is yet another revised patch.  It corrects the position report only
> for the capture, but takes the FIFO delay into account, too.

With tsched=0, everything is perfect. When tsched=0 is removed, the
audio output is not crackling again, however ALL audio is retarded when
the acquisition starts, to me it feels around 4/5 seconds. I had a
player playing music in background and the whole stream jump back for
that time; if i try to seek in another position the audio will seek only
after the same 4/5 seconds. If I stop capturing audio, the playback sync
back again and the playback is working correctly again.

Very weird.

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https://bugs.launchpad.net/bugs/1801540

Title:
  Microphone distorted sound on ALC892/1220 on AMD chipsets

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