I can't recall and have since switched to NixOS 21.03pre260232.733e537a8ad (Okapi), where I do not experience the sound issue on kernel version 5.4.85.
However, the wifi driver on Ubuntu that started showing extremely severe instability at roughly the same time as this sound underrun issue hit (https://bugs.launchpad.net/bugs/1908106) is very much still a problem on that version of NixOS (kernel 5.4.85), as well as every regression I tested it on, including every major version from 19.03 to 21.03. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. 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: Incomplete 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1908153/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
