Audio is low pitched/deeper on AMD GPU

[Diego Velasquez]

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
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /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)
dmi.bios.date: 02/04/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0502
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: 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:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer

[Launchpad Janitor (janitor)]

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

[Daniel van Vugt (vanvugt)]

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

[Michael Lawton (flangefrog)]

I can confirm this same bug while using DisplayPort output on an AMD R5 240 OEM. I'm using Mint 19 (Ubuntu 18.04)