I am also affected by this bug. my system uses these codecs /proc/asound/card0/codec#0:Codec: ATI R6xx HDMI /proc/asound/card1/codec#0:Codec: Realtek ALC1220
on an Asus Prime x370a Pro motherboard with a ryzen 1600X. This problem was first observed in Ubuntu 16.04.3, with kernel 4.4 and the 1201 bios for this board. The board is now running 3401, and Ubuntu 17.10, in order to have access to a more recent kernel. I installed the hwe update to 16.04 first, bringing my kernel version to 4.10 or 4.11, but it made the login screen and all terminals distorted and unreadable, so I was unable to test in that state - a state repeated after the clean install of 17.10, but which I found was due to ubuntu trying to set an ultra wide resolution to my 4k monitor, and being unable to display 4k i I corrected by switching from HDMI to Display Link Cable. In the prior configuration I confirmed that the distortion occurred over the HDMI to my monitor speakers, as well as over the analog jack output. In my case, the distortion sounds identical to the recording made by Gargoyle above, and seemed to come and go in 16.04.3. using pulseaudio -k in a terminal gets rid of the problem for 10 minutes to several hours (or, perhaps it comes and goes away on its own and i miss it). In addition, if it is of consequence, I had been running Ubuntu 16.04 since launch on a Gigabyte X58A-UD3R board's sound with no problems. After swapping the board to the Asus prime X370a pro 3 weeks ago, this problem appeared. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1716654 Title: [System Product Name, Realtek ALC1220, Pink Mic, Rear] Underruns, dropouts or crackling sound Status in alsa-driver package in Ubuntu: Confirmed Bug description: Have checked under windows (same computer in dual-boot & same headset), and the sound is crystal clear, so 99% sure this is not a hardware problem. Motherboard is ASUS Crosshair Hero 6. ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: alsa-base 1.0.25+dfsg-0ubuntu5 ProcVersionSignature: Ubuntu 4.12.0-13.14-generic 4.12.10 Uname: Linux 4.12.0-13-generic x86_64 NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia ApportVersion: 2.20.7-0ubuntu1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC3: paul 2587 F.... pulseaudio /dev/snd/controlC0: paul 2587 F.... pulseaudio /dev/snd/controlC1: paul 2587 F.... pulseaudio /dev/snd/controlC2: paul 2587 F.... pulseaudio CurrentDesktop: ubuntu:GNOME Date: Tue Sep 12 11:48:05 2017 PackageArchitecture: all SourcePackage: alsa-driver Symptom: audio Symptom_AlsaRecordingTest: ALSA recording test through plughw:Generic successful Symptom_Card: HD-Audio Generic - HD-Audio Generic Symptom_Jack: Pink Mic, Rear Symptom_PulseAudioRecordingTest: PulseAudio recording test through plughw:Generic successful Symptom_Type: Underruns, dropouts, or "crackling" sound Title: [System Product Name, Realtek ALC1220, Pink Mic, Rear] Underruns, dropouts or crackling sound UpgradeStatus: Upgraded to artful on 2017-08-31 (11 days ago) dmi.bios.date: 07/28/2017 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 1501 dmi.board.asset.tag: Default string dmi.board.name: CROSSHAIR VI HERO dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev 1.xx dmi.chassis.asset.tag: Default string dmi.chassis.type: 3 dmi.chassis.vendor: Default string dmi.chassis.version: Default string dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1501:bd07/28/2017:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnCROSSHAIRVIHERO:rvrRev1.xx:cvnDefaultstring:ct3:cvrDefaultstring: dmi.product.family: To be filled by O.E.M. dmi.product.name: System Product Name dmi.product.version: System Version dmi.sys.vendor: System manufacturer mtime.conffile..etc.modprobe.d.alsa-base.conf: 2017-09-12T11:37:48.670242 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1716654/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
