[Qemu-devel] [Bug 1492649] [NEW] QEMU soundhw HDA huge microphone lag

[Nek]

Public bug reported:

I use a Windows 7 x86_64 guest with VGA passthrough and -soundhw hda.
The audio plays fine, but the microphone input is delayed by more than
20 seconds.

-soundhw ac97 does not have this delay but it has choppy sound playback
and input.

System:
Arch linux
Kernel: 4.1.6-1-ARCH
Audio hardware: 00:1b.0 Audio device: Intel Corporation 82801JI (ICH10 Family) 
HD Audio Controller
Audio system: Pulseaudio 6.0

** Affects: qemu
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1492649

Title:
  QEMU soundhw HDA huge microphone lag

Status in QEMU:
  New

Bug description:
  I use a Windows 7 x86_64 guest with VGA passthrough and -soundhw hda.
  The audio plays fine, but the microphone input is delayed by more than
  20 seconds.

  -soundhw ac97 does not have this delay but it has choppy sound
  playback and input.

  System:
  Arch linux
  Kernel: 4.1.6-1-ARCH
  Audio hardware: 00:1b.0 Audio device: Intel Corporation 82801JI (ICH10 
Family) HD Audio Controller
  Audio system: Pulseaudio 6.0

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