This bug is potentially the same one as 1716654 and also effects me as a single ALC1220 user (The gigabyte board has a second one which is not the case on the MSI X370 Pro Carbon).
--- Copy from my comment at 1716654 --- Having the same issue on the MSI X370 Gaming Pro Carbon, audio is fine but the microphone is having weird behavior that differs depending on configuration. When audacity is launched it will trigger the bug that increases the recording speed to be insanely high pitched and fast. Prior to using audacity i will hear a robotic noise while speaking that is also present as a robotic echo. Making use of the tsched=0 the robotic distortion is gone but replaced with severe crackling that over time becomes less severe but still very notable. The following is an export of the alsa source. index: 1 name: <alsa_input.pci-0000_21_00.3.analog-stereo> driver: <module-alsa-card.c> flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY state: RUNNING suspend cause: priority: 9039 volume: front-left: 32768 / 50% / -18,06 dB, front-right: 32768 / 50% / -18,06 dB balance 0,00 base volume: 6554 / 10% / -60,00 dB volume steps: 65537 muted: no current latency: 0,22 ms max rewind: 0 KiB sample spec: s16le 2ch 48000Hz channel map: front-left,front-right Stereo used by: 1 linked by: 1 configured latency: 2,50 ms; range is 0,50 .. 1837,33 ms card: 1 <alsa_card.pci-0000_21_00.3> module: 8 properties: alsa.resolution_bits = "16" device.api = "alsa" device.class = "sound" alsa.class = "generic" alsa.subclass = "generic-mix" alsa.name = "ALC1220 Analog" alsa.id = "ALC1220 Analog" alsa.subdevice = "0" alsa.subdevice_name = "subdevice #0" alsa.device = "0" alsa.card = "1" alsa.card_name = "HD-Audio Generic" alsa.long_card_name = "HD-Audio Generic at 0xfe900000 irq 64" alsa.driver_name = "snd_hda_intel" device.bus_path = "pci-0000:21:00.3" sysfs.path = "/devices/pci0000:00/0000:00:08.1/0000:21:00.3/sound/card1" device.bus = "pci" device.vendor.id = "1022" device.vendor.name = "Advanced Micro Devices, Inc. [AMD]" device.product.id = "1457" device.product.name = "Family 17h (Models 00h-0fh) HD Audio Controller" device.string = "front:1" device.buffering.buffer_size = "352768" device.buffering.fragment_size = "176384" device.access_mode = "mmap+timer" device.profile.name = "analog-stereo" device.profile.description = "Analog Stereo" device.description = "Family 17h (Models 00h-0fh) HD Audio Controller Analog Stereo" alsa.mixer_name = "Realtek ALC1220" alsa.components = "HDA:10ec1220,1462da32,00100003" module-udev-detect.discovered = "1" device.icon_name = "audio-card-pci" ports: analog-input-front-mic: Front Microphone (priority 8500, latency offset 0 usec, available: yes) properties: device.icon_name = "audio-input-microphone" analog-input-rear-mic: Rear Microphone (priority 8200, latency offset 0 usec, available: no) properties: device.icon_name = "audio-input-microphone" analog-input-linein: Line In (priority 8100, latency offset 0 usec, available: no) properties: Very notable here is the buffer size which falls short of the required buffer size 44800 while in Windows the card can go up to 24-bit , 192000 without having to resort to a third party driver. -- 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/1764965 Title: [Realtek ALC1220 ASUS PRIME X370] Recording is very slow and plays 10x faster Status in sound-2.6 (alsa-kernel): New Status in alsa-driver package in Ubuntu: Confirmed Bug description: Recording applications (audacity, arecord, gnome-sound-recorder) record extremely slowly (at what seems to be 0,1x speed), which means that at playback the sound is played at a very high pitch and much faster than the original. To help you understand the issue, I've attached an archive containing two files recorded at the same time, one with arecord -f cd and the other with a stand-alone Olympus recorder. A video of Audacity's behavior when trying to record is also available: https://youtu.be/Fe20eQNvZVA Look at the seconds hand of the xclock and how much it is moving before Audacity is done recording one second of audio. Things I've already tried: * Purging and reinstalling Audacity * Purging and reinstalling Pulseaudio following the guide on the Ubuntu Wiki * Running audacity with this command: Exec=env PULSE_LATENCY_MSEC=30 audacity as suggested on AskUbuntu * Reinstalling Ubuntu on a new hard disk * Running audacity on a live CD (in Ubuntu version 16.04.3, 17.10.1, 18.04 daily and Xubuntu 17.10.1, 18.04) The machine is a Ryzen 5 1600 with an ASUS X370 Prime motherboard. The problem can be reproduced as follows: * Boot a live DVD of Ubuntu/Xubuntu 16.04.3, 17.10.1, 18.04 (versions I've tested with) * Install audacity via the terminal * Start recording, microphone is connected to the rear microphone jack. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: alsa-base 1.0.25+dfsg-0ubuntu5 ProcVersionSignature: Ubuntu 4.13.0-38.43~16.04.1-generic 4.13.16 Uname: Linux 4.13.0-38-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.16 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: jacopo 2417 F.... pulseaudio /dev/snd/controlC0: jacopo 2417 F.... pulseaudio CurrentDesktop: Unity Date: Wed Apr 18 09:35:50 2018 InstallationDate: Installed on 2018-03-03 (45 days ago) InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801) PackageArchitecture: all SourcePackage: alsa-driver Symptom: audio Symptom_AlsaRecordingTest: ALSA recording test through plughw:Generic failed Symptom_Card: HD-Audio Generic - HD-Audio Generic Symptom_Jack: Pink Mic, Rear Symptom_Type: None of the above Title: [System Product Name, Realtek ALC1220, Pink Mic, Rear] Recording problem UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 03/06/2018 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 3805 dmi.board.asset.tag: Default string dmi.board.name: PRIME X370-PRO dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev X.0x dmi.chassis.asset.tag: Default string dmi.chassis.type: 3 dmi.chassis.vendor: Default string dmi.chassis.version: Default string dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr3805:bd03/06/2018:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnPRIMEX370-PRO:rvrRevX.0x: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 To manage notifications about this bug go to: https://bugs.launchpad.net/sound-2.6/+bug/1764965/+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