misaka4e21's Blog

Ryzen HD Audio ALG892 recording workarounds on Linux

When you record a piece of audio on an AMD Ryzen desktop with Realtek ALG892 codec running any distro of GNU/Linux, you’ll find the audio distorted, high-pitch.

To workaround the problem:
Record with bitrate higher than 48000 (default 44100).

For PulseAudio users, resampling must be disabled to keep the rate.

Edit /etc/pulse/daemon.conf, append:

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resample-method = src-sinc-best-quality
default-sample-format = s16le
default-sample-rate = 88200
avoid-resampling = yes

Edit /etc/pulse/default.pa, change
load-module module-udev-detect
to
load-module module-udev-detect use_ucm=0 tsched=0

And restart PulseAudio.

P.S. Hardware and Software Configuration

  • CPU: Ryzen 1700
  • Mainboard: MSI B350m Mortar, with Realtek ALG892 integrated.
  • OS: AOSC OS 6.0.0 “Fsck”, kernel 5.3.8
  • PulseAudio: 12.2-rebootstrapped
hardwareaudio