I have also observed a similar behavior
with Ubuntu 20.04
lspci | grep Audio
09:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Ellesmere HDMI
Audio [Radeon RX 470/480 / 570/580/590]
0b:00.4 Audio device: Advanced Micro Devices, Inc. [AMD] Starship/Matisse HD
Audio Controller
uname -a
Linux jrechenknecht7 5.4.0-73-generic #82-Ubuntu SMP Wed Apr 14 17:39:42
UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
and Firefox 88.0.1 (AMD64 Platform).
For me this bug also causes other applications to be distorted, too.
sudo lshw -C sound
sudo lshw -C sound
*-usb:4
Beschreibung: Audio-Gerät
Produkt: HD Webcam C615
Hersteller: Logitech, Inc.
Physische ID: a
Bus-Informationen: usb@1:a
Version: 0.11
Seriennummer: 4B9FE1D0
Fähigkeiten: usb-2.00 audio-control
Konfiguration: driver=uvcvideo maxpower=500mA speed=480Mbit/s
*-multimedia
Beschreibung: Audio device
Produkt: Ellesmere HDMI Audio [Radeon RX 470/480 / 570/580/590]
Hersteller: Advanced Micro Devices, Inc. [AMD/ATI]
Physische ID: 0.1
Bus-Informationen: pci@0000:09:00.1
Version: 00
Breite: 64 bits
Takt: 33MHz
Fähigkeiten: pm pciexpress msi bus_master cap_list
Konfiguration: driver=snd_hda_intel latency=0
Ressourcen: irq:100 memory:fce60000-fce63fff
*-multimedia
Beschreibung: Audio device
Produkt: Starship/Matisse HD Audio Controller
Hersteller: Advanced Micro Devices, Inc. [AMD]
Physische ID: 0.4
Bus-Informationen: pci@0000:0b:00.4
Version: 00
Breite: 32 bits
Takt: 33MHz
Fähigkeiten: pm pciexpress msi bus_master cap_list
Konfiguration: driver=snd_hda_intel latency=0
Ressourcen: irq:102 memory:fc900000-fc907fff
Note that the behavior occurred when the Logitex C615 has been unplugged.
I was just curious, because Dave Evans has the same webcam so I could not
exclude that
this may be related.
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https://bugs.launchpad.net/bugs/1906741
Title:
Firefox sometimes causes garbled audio
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