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.
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You received this bug notification because you are a member of Desktop
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
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