apport information
** Attachment added: "acpidump.txt"
https://bugs.launchpad.net/bugs/1908153/+attachment/5443987/+files/acpidump.txt
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1908153
Title:
[Alienware 15 R4, Realtek ALC3266, Black Headphone Out or internal
speakers] Underruns, dropouts or crackling sound
Status in linux package in Ubuntu:
Confirmed
Bug description:
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
---
ProblemType: Bug
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
DistroRelease: Ubuntu 20.04
InstallationDate: Installed on 2020-03-23 (267 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 0c45:6708 Microdia Integrated_Webcam_FHD
Bus 001 Device 002: ID 187c:0550 Alienware Corporation AW-ELC
Bus 001 Device 004: ID 0cf3:e301 Qualcomm Atheros Communications
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Alienware Alienware 15 R4
NonfreeKernelModules: nvidia_modeset nvidia
Package: linux (not installed)
ProcEnviron:
TERM=screen-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 EFI VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-58-generic
root=UUID=875cff72-a3db-4709-ac4d-ce80b29b9970 ro i915.alpha_support=1
ProcVersionSignature: Ubuntu 5.4.0-58.64-generic 5.4.73
RelatedPackageVersions:
linux-restricted-modules-5.4.0-58-generic N/A
linux-backports-modules-5.4.0-58-generic N/A
linux-firmware 1.187.6
Tags: focal
Uname: Linux 5.4.0-58-generic x86_64
UpgradeStatus: Upgraded to focal on 2020-05-12 (217 days ago)
UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo
_MarkForUpload: True
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
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