You have been subscribed to a public bug:
With this latest update (Linux 5.4.0-58), the sound is now crackling.
Feels like DMA buffer underruns, but I'm not sure. Not seeing a
significant CPU load that might have aggravated it, nor am I seeing any
complaints in syslog or kern.log. Restarting pulseaudio and running
alsa force-reload had no effect.
These sound issues started with the same update that caused the
ath10k_pci driver to become extremely unreliable (filed as bug 1908106).
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 5.4.0-58.64-generic 5.4.73
Uname: Linux 5.4.0-58-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.13
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: ddt 22891 F.... pulseaudio
/dev/snd/controlC0: ddt 22891 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Mon Dec 14 14:55:14 2020
InstallationDate: Installed on 2020-03-23 (266 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
PackageArchitecture: all
ProcEnviron:
TERM=screen-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH failed
Symptom_Card: Built-in Audio - HDA Intel PCH
Symptom_Jack: Black Headphone Out, Left
Symptom_PulseAudioLog:
Dec 14 07:32:47 ddtlap dbus-daemon[859]: [system] Activating via systemd:
service name='org.freedesktop.RealtimeKit1' unit='rtkit-daemon.service'
requested by ':1.32' (uid=124 pid=1157 comm="/usr/bin/pulseaudio --daemonize=no
--log-target=jo" label="unconfined")
Dec 14 08:11:14 ddtlap pulseaudio[1157]: Failed to create sink input: sink is
suspended.
Dec 14 08:12:19 ddtlap pulseaudio[1157]: Failed to create sink input: sink is
suspended.
Dec 14 08:13:47 ddtlap dbus-daemon[859]: [system] Rejected send message, 0
matched rules; type="method_return", sender=":1.70" (uid=1000 pid=1553
comm="/usr/bin/pulseaudio --daemonize=no --log-target=jo" label="unconfined")
interface="(unset)" member="(unset)" error name="(unset)" requested_reply="0"
destination=":1.3" (uid=0 pid=855 comm="/usr/lib/bluetooth/bluetoothd "
label="unconfined")
Symptom_Type: Underruns, dropouts, or "crackling" sound
Title: [Alienware 15 R4, Realtek ALC3266, Black Headphone Out, Left] Underruns,
dropouts or crackling sound
UpgradeStatus: Upgraded to focal on 2020-05-12 (216 days ago)
dmi.bios.date: 04/18/2019
dmi.bios.vendor: Alienware
dmi.bios.version: 1.7.0
dmi.board.name: Alienware 15 R4
dmi.board.vendor: Alienware
dmi.board.version: A00
dmi.chassis.type: 10
dmi.chassis.vendor: Alienware
dmi.chassis.version: Not Specified
dmi.modalias:
dmi:bvnAlienware:bvr1.7.0:bd04/18/2019:svnAlienware:pnAlienware15R4:pvr1.7.0:rvnAlienware:rnAlienware15R4:rvrA00:cvnAlienware:ct10:cvrNotSpecified:
dmi.product.family: Alienware
dmi.product.name: Alienware 15 R4
dmi.product.sku: 0876
dmi.product.version: 1.7.0
dmi.sys.vendor: Alienware
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal
--
[Alienware 15 R4, Realtek ALC3266, Black Headphone Out or internal speakers]
Underruns, dropouts or crackling sound
https://bugs.launchpad.net/bugs/1908153
You received this bug notification because you are a member of Kernel Packages,
which is subscribed to linux in Ubuntu.
--
Mailing list: https://launchpad.net/~kernel-packages
Post to : [email protected]
Unsubscribe : https://launchpad.net/~kernel-packages
More help : https://help.launchpad.net/ListHelp
