It sounds like this might be noise on the motherboard itself. Especially if you are hearing crackling when no sound is playing.
I don't think there's much we can do about this in software, although the kernel guys sometimes have some tricks they can do to make sound chips less noisy... I personally recommend using a USB audio DAC or "USB sound card" to avoid such problems with motherboard noise. It is a very common hardware problem. You will also get higher quality sound from a USB DAC. I am also moving this bug to the kernel, just in case there's anything that can be done to reduce the problem there. ** Summary changed: - [All Series, Realtek ALC1150] Crackling sound + [ASUS Z87I-DELUXE, Realtek ALC1150] Crackling sound ** Package changed: alsa-driver (Ubuntu) => linux (Ubuntu) -- 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/1827912 Title: [ASUS Z87I-DELUXE, Realtek ALC1150] Crackling sound Status in linux package in Ubuntu: New Bug description: Issue: Audio Crackling Video play back and during games seems to be when the issue is the worst. Scrolling on pages or hovering over UI objects also seems to trigger it too though Testing: There is crackling coming from any speakers (headsets or brand-new speakers with no known issues). Crackling does not seem to be related to audio (it can occur even with sound turned off in the sound-control menu). (it does stop when power to speakers are removed) Video play back and during games seems to be when the issue is the worst. Scrolling on pages or hovering over UI objects also seems to trigger it too though. The screen being on, or connected made no difference though. No change based on keyboard or mouse. Fixes tried: https://wiki.ubuntu.com/Audio/PositionReporting ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: alsa-base 1.0.25+dfsg-0ubuntu5 Uname: Linux 5.0.7-steamvr-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.6 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC2: andruid 1668 F.... pulseaudio /dev/snd/controlC0: andruid 1668 F.... pulseaudio /dev/snd/pcmC0D0p: andruid 1668 F...m pulseaudio /dev/snd/controlC1: andruid 1668 F.... pulseaudio CurrentDesktop: ubuntu:GNOME Date: Mon May 6 12:38:45 2019 InstallationDate: Installed on 2019-02-16 (78 days ago) InstallationMedia: Ubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210) PackageArchitecture: all ProcEnviron: TERM=xterm-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 successful Symptom_Card: Built-in Audio - HDA Intel PCH Symptom_Jack: Green Line Out, Rear Symptom_PulseAudioLog: May 06 12:22:43 Workstation-0 dbus-daemon[1113]: [system] Activating via systemd: service name='org.freedesktop.RealtimeKit1' unit='rtkit-daemon.service' requested by ':1.30' (uid=1000 pid=1668 comm="/usr/bin/pulseaudio --start --log-target=syslog " label="kernel") Symptom_PulsePlaybackTest: PulseAudio playback test successful Symptom_Type: Underruns, dropouts, or "crackling" sound Title: [All Series, Realtek ALC1150, Green Line Out, Rear] Underruns, dropouts or crackling sound UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 11/26/2014 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 1204 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: Z87I-DELUXE dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev X.0x dmi.chassis.asset.tag: Asset-1234567890 dmi.chassis.type: 3 dmi.chassis.vendor: Chassis Manufacture dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1204:bd11/26/2014:svnASUS:pnAllSeries:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnZ87I-DELUXE:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion: dmi.product.family: ASUS MB dmi.product.name: All Series dmi.product.sku: All dmi.product.version: System Version dmi.sys.vendor: ASUS mtime.conffile..etc.modprobe.d.alsa-base.conf: 2019-05-06T12:22:03.874818 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1827912/+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
