[USB-Audio - Saffire 6 USB, playback] Sound is distorted and high-pitched

[Michal Lašan]

Probably after an upgrade of kernel to 5.11.0-25-generic from 5.8.0-50-generic which worked well in this regard, sound in the Focusrite card started to be high-pitched and distorted. When I use the normal audio output, the sound is correct.

Further debug info can be found here:
https://answers.launchpad.net/ubuntu/+source/alsa-driver/+question/696837

This is from the times when I accidentally upgraded to a newer unofficial kernel and the same bug occurred to me. It seems that now an official kernel with this bug has been submitted.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 5.11.0-25.27~20.04.1-generic 5.11.22
Uname: Linux 5.11.0-25-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.18
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: michal 1363 F.... pulseaudio
 /dev/snd/controlC2: michal 1363 F.... pulseaudio
 /dev/snd/controlC1: michal 1363 F.... pulseaudio
 /dev/snd/pcmC1D0p: michal 1363 F...m pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Fri Aug 6 01:50:14 2021
InstallationDate: Installed on 2021-06-16 (50 days ago)
InstallationMedia: Ubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64 (20210209.1)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:USB successful
Symptom_Card: TU104 HD Audio Controller - HDA NVidia
Symptom_PulsePlaybackTest: PulseAudio playback test successful
Symptom_Type: Digital clip or distortion, or "overdriven" sound
Title: [USB-Audio - Saffire 6 USB, playback] Sound is distorted
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/25/2019
dmi.bios.release: 5.13
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1.80
dmi.board.asset.tag: Default string
dmi.board.name: Z390-A PRO (MS-7B98)
dmi.board.vendor: Micro-Star International Co., Ltd.
dmi.board.version: 1.0
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: Micro-Star International Co., Ltd.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1.80:bd12/25/2019:br5.13:svnMicro-StarInternationalCo.,Ltd.:pnMS-7B98:pvr1.0:rvnMicro-StarInternationalCo.,Ltd.:rnZ390-APRO(MS-7B98):rvr1.0:cvnMicro-StarInternationalCo.,Ltd.:ct3:cvr1.0:
dmi.product.family: Default string
dmi.product.name: MS-7B98
dmi.product.sku: Default string
dmi.product.version: 1.0
dmi.sys.vendor: Micro-Star International Co., Ltd.