Audio is low pitched/deeper on AMD GPU

Bug #1810574 reported by Diego Velasquez on 2019-01-05
This bug affects 2 people
Affects Status Importance Assigned to Milestone
alsa-driver (Ubuntu)
pulseaudio (Ubuntu)

Bug Description

I have a dual screen set up, a Display Port Monitor and a HDMI monitor on Ubuntu 18.04.1 ALSA driver k4.15.0-43-generic. The display port monitor has speakers so I used as my main speakers, but, the audio of any source sounds deeper/slower than it should be. Even videos of any source last longer. For example, 10 "seconds" of any video in my computer are 12.5 seconds in my phone stopwatch. I'm using a radeon r9 280x.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 4.15.0-43.46-generic 4.15.18
Uname: Linux 4.15.0-43-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
 /dev/snd/controlC0: diego 1586 F.... pulseaudio
 /dev/snd/pcmC1D3p: diego 1586 F...m pulseaudio
 /dev/snd/controlC1: diego 1586 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Fri Jan 4 21:31:30 2019
InstallationDate: Installed on 2019-01-03 (1 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:HDMI failed
Symptom_Card: Tahiti HDMI Audio [Radeon HD 7870 XT / 7950/7970] - HDA ATI HDMI
Symptom_Jack: Digital Out, HDMI
Symptom_Type: Digital clip or distortion, or "overdriven" sound
Title: [System Product Name, ATI R6xx HDMI, Digital Out, HDMI] Sound is distorted
UpgradeStatus: No upgrade log present (probably fresh install) 02/04/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0502
dmi.board.asset.tag: To be filled by O.E.M. H61M-E
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev X.0x
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0502:bd02/04/2013:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnH61M-E:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion: To be filled by O.E.M. System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer

Diego Velasquez (petrux25) wrote :
summary: - Audio is low pitch on AMD GPU
+ Audio is low pitched/deeper on AMD GPU
information type: Public → Public Security
information type: Public Security → Private Security
information type: Private Security → Public
Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in alsa-driver (Ubuntu):
status: New → Confirmed
Changed in pulseaudio (Ubuntu):
status: New → Confirmed
Daniel van Vugt (vanvugt) wrote :

It sounds like there might be a mismatch between one component playing at 44.1kHz and another thinking that is 48kHz.

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