I can add some information to this bug (or what seems to be a bunch of
related audio bugs).
In my case it is related to my sound card, switching to and from the
soundcard audio causes the bug to appear and disappear.
Line-Out - Built-in Audio : No bug
Digital Output (S/PDIF) - EMU20k2 [Sound Blaster X-Fi Titanium Series] :
Occasionally garbled audio
I've added more info about my hardware devices and drivers:
lspci | grep Audio
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family
High Definition Audio Controller (rev 05)
01:00.1 Audio device: NVIDIA Corporation GP102 HDMI Audio Controller (rev
a1)
03:00.0 Audio device: Creative Labs EMU20k2 [Sound Blaster X-Fi Titanium
Series] (rev 04)
sudo lshw -C sound
*-multimedia
description: Audio device
product: GP102 HDMI Audio Controller
vendor: NVIDIA Corporation
physical id: 0.1
bus info: pci@0000:01:00.1
version: a1
width: 32 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: driver=snd_hda_intel latency=0
resources: irq:17 memory:fb080000-fb083fff
*-usb
description: Audio device
product: HD Webcam C615
vendor: Logitech, Inc.
physical id: 2
bus info: usb@1:1.2
version: 0.11
serial: 27A1DFD0
capabilities: usb-2.00 audio-control
configuration: driver=uvcvideo maxpower=500mA speed=480Mbit/s
*-multimedia
description: Audio device
product: 6 Series/C200 Series Chipset Family High Definition Audio
Controller
vendor: Intel Corporation
physical id: 1b
bus info: pci@0000:00:1b.0
version: 05
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: driver=snd_hda_intel latency=0
resources: irq:34 memory:f9300000-f9303fff
*-multimedia
description: Audio device
product: EMU20k2 [Sound Blaster X-Fi Titanium Series]
vendor: Creative Labs
physical id: 0
bus info: pci@0000:03:00.0
version: 04
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: driver=snd_ctxfi latency=0
resources: irq:17 memory:f9200000-f920ffff memory:f9000000-f91fffff
memory:f8000000-f8ffffff
--
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to firefox in Ubuntu.
https://bugs.launchpad.net/bugs/1906741
Title:
Firefox sometimes causes garbled audio
Status in firefox package in Ubuntu:
Confirmed
Status in pulseaudio package in Ubuntu:
Confirmed
Bug description:
Opening certain applications/websites at the same time as Firefox
causes the audio to become garbled.
The audio sounds distorted with an echo.
Certain actions are guaranteed to cause this, but it can also
happening when only running instances of Firefox.
I've been able to consistently cause this by launching Zoom from a link
within Firefox.
This does not occur when using Chrome.
The only way to fix the issue is to shut down all audio-related
programs.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: firefox 83.0+build2-0ubuntu0.20.04.1
ProcVersionSignature: Ubuntu 5.4.0-56.62-generic 5.4.73
Uname: Linux 5.4.0-56-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
AddonCompatCheckDisabled: False
ApportVersion: 2.20.11-0ubuntu27.12
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC2: rdevans 55475 F.... pulseaudio
/dev/snd/controlC0: rdevans 55475 F.... pulseaudio
/dev/snd/controlC3: rdevans 55475 F.... pulseaudio
/dev/snd/controlC1: rdevans 55475 F.... pulseaudio
BuildID: 20201112153044
CasperMD5CheckResult: skip
Channel: Unavailable
CurrentDesktop: ubuntu:GNOME
Date: Thu Dec 3 16:55:36 2020
Extensions: extensions.sqlite corrupt or missing
ForcedLayersAccel: False
IfupdownConfig:
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
IncompatibleExtensions: Unavailable (corrupt or non-existant
compatibility.ini or extensions.sqlite)
InstallationDate: Installed on 2017-10-20 (1140 days ago)
InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
IpRoute:
default via 10.0.0.1 dev enp7s0 proto dhcp metric 100
10.0.0.0/24 dev enp7s0 proto kernel scope link src 10.0.0.7 metric 100
169.254.0.0/16 dev enp7s0 scope link metric 1000
Locales: extensions.sqlite corrupt or missing
PrefErrors: Unexpected character ',' before close parenthesis @
/usr/lib/firefox/omni.ja:greprefs.js:354
PrefSources: prefs.js
Profiles: Profile0 (Default) - LastVersion=83.0/20201112153044 (In use)
RunningIncompatibleAddons: False
SourcePackage: firefox
Themes: extensions.sqlite corrupt or missing
UpgradeStatus: Upgraded to focal on 2020-11-12 (21 days ago)
dmi.bios.date: 02/18/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P1.40
dmi.board.name: H67M
dmi.board.vendor: ASRock
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrP1.40:bd02/18/2011:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnH67M:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.family: To Be Filled By O.E.M.
dmi.product.name: To Be Filled By O.E.M.
dmi.product.sku: To Be Filled By O.E.M.
dmi.product.version: To Be Filled By O.E.M.
dmi.sys.vendor: To Be Filled By O.E.M.
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