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#1 2020-04-17 16:33:03

orfelle
Member
Registered: 2020-04-17
Posts: 3

Weird audio signal when using audio jack - ALSA

Hi everyone,

I've installed arch linux on my laptop, and almost everything is going fine, except for the sound.

When I plug in a headphone or anything else like a speaker, there is a weird audio coming out of the device, like a pulsing song fading (I've recorded it, here. When I play any audio (I tried with firefox and spotify) there is nothing but this weird audio signal.
However, when I use the internal speaker of my laptop, the audio is great. I have this issue only using audio devices connected by jack.
I know this is not a hardware failure because I use a dual boot with windows, and the audio is fine on it.
I know that my headphone is detected because with the tool pavucontrol I can see that the headphone is detected, and when I mute the output this weird audio signal disappear.
So how can I make my audio devices using the jack connector works on my arch linux ? Is there any ALSA configuration I missed about audio jack ?

Thank you very much.

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#2 2020-04-17 17:05:47

V1del
Forum Moderator
Registered: 2012-10-16
Posts: 25,381

Re: Weird audio signal when using audio jack - ALSA

That's often rather some HW issue. Make sure the jack is actually properly connected, power saving can also have an effect here, do you use some power saving daemon like TLP or powertop or so? If so try to  disable power saving they apply.

If you're sure neither of these are the case post 

dmesg | grep snd
aplay -lL
#If using pulse
pacmd list-cards
pacmd list-sinks
pacmd list-sink-inputs

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#3 2020-04-18 14:18:15

orfelle
Member
Registered: 2020-04-17
Posts: 3

Re: Weird audio signal when using audio jack - ALSA

Hey ! Thank you
Yeah I'm pretty sure the jack is properly connected, I've tried a lot of times and as I said, it works on Windows (and was working when I was using other linux distro or DE), and no I don't have any power saving daemon.

All the outputs are here :

dmesg | grep snd
[    3.371947] snd_hda_intel 0000:00:1f.3: enabling device (0000 -> 0002)
[    3.461393] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
[    3.831034] snd_hda_codec_realtek hdaudioC0D0: autoconfig for ALC294: line_outs=1 (0x17/0x0/0x0/0x0/0x0) type:speaker
[    3.831036] snd_hda_codec_realtek hdaudioC0D0:    speaker_outs=0 (0x0/0x0/0x0/0x0/0x0)
[    3.831037] snd_hda_codec_realtek hdaudioC0D0:    hp_outs=1 (0x21/0x0/0x0/0x0/0x0)
[    3.831038] snd_hda_codec_realtek hdaudioC0D0:    mono: mono_out=0x0
[    3.831039] snd_hda_codec_realtek hdaudioC0D0:    inputs:
[    3.831040] snd_hda_codec_realtek hdaudioC0D0:      Headset Mic=0x19
[    3.831040] snd_hda_codec_realtek hdaudioC0D0:      Internal Mic=0x12
aplay -lL
surround21
    2.1 Surround output to Front and Subwoofer speakers
surround40
    4.0 Surround output to Front and Rear speakers
surround41
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50
    5.0 Surround output to Front, Center and Rear speakers
surround51
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
null
    Discard all samples (playback) or generate zero samples (capture)
samplerate
    Rate Converter Plugin Using Samplerate Library
speexrate
    Rate Converter Plugin Using Speex Resampler
jack
    JACK Audio Connection Kit
oss
    Open Sound System
pulse
    PulseAudio Sound Server
speex
    Plugin using Speex DSP (resample, agc, denoise, echo, dereverb)
upmix
    Plugin for channel upmix (4,6,8)
vdownmix
    Plugin for channel downmix (stereo) with a simple spacialization
default
    Default ALSA Output (currently PulseAudio Sound Server)
sysdefault:CARD=PCH
    HDA Intel PCH, ALC294 Analog
    Default Audio Device
front:CARD=PCH,DEV=0
    HDA Intel PCH, ALC294 Analog
    Front speakers
surround21:CARD=PCH,DEV=0
    HDA Intel PCH, ALC294 Analog
    2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=PCH,DEV=0
    HDA Intel PCH, ALC294 Analog
    4.0 Surround output to Front and Rear speakers
surround41:CARD=PCH,DEV=0
    HDA Intel PCH, ALC294 Analog
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=PCH,DEV=0
    HDA Intel PCH, ALC294 Analog
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=PCH,DEV=0
    HDA Intel PCH, ALC294 Analog
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=PCH,DEV=0
    HDA Intel PCH, ALC294 Analog
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
hdmi:CARD=PCH,DEV=0
    HDA Intel PCH, HDMI 0
    HDMI Audio Output
hdmi:CARD=PCH,DEV=1
    HDA Intel PCH, HDMI 1
    HDMI Audio Output
hdmi:CARD=PCH,DEV=2
    HDA Intel PCH, HDMI 2
    HDMI Audio Output
hdmi:CARD=PCH,DEV=3
    HDA Intel PCH, HDMI 3
    HDMI Audio Output
hdmi:CARD=PCH,DEV=4
    HDA Intel PCH, HDMI 4
    HDMI Audio Output
usbstream:CARD=PCH
    HDA Intel PCH
    USB Stream Output
**** Liste des Périphériques Matériels PLAYBACK ****
carte 0: PCH [HDA Intel PCH], périphérique 0: ALC294 Analog [ALC294 Analog]
  Sous-périphériques: 1/1
  Sous-périphérique #0: subdevice #0
carte 0: PCH [HDA Intel PCH], périphérique 3: HDMI 0 [HDMI 0]
  Sous-périphériques: 1/1
  Sous-périphérique #0: subdevice #0
carte 0: PCH [HDA Intel PCH], périphérique 7: HDMI 1 [HDMI 1]
  Sous-périphériques: 1/1
  Sous-périphérique #0: subdevice #0
carte 0: PCH [HDA Intel PCH], périphérique 8: HDMI 2 [HDMI 2]
  Sous-périphériques: 1/1
  Sous-périphérique #0: subdevice #0
carte 0: PCH [HDA Intel PCH], périphérique 9: HDMI 3 [HDMI 3]
  Sous-périphériques: 1/1
  Sous-périphérique #0: subdevice #0
carte 0: PCH [HDA Intel PCH], périphérique 10: HDMI 4 [HDMI 4]
  Sous-périphériques: 1/1
  Sous-périphérique #0: subdevice #0
list-cards
1 card(s) available.
    index: 0
	name: <alsa_card.pci-0000_00_1f.3>
	driver: <module-alsa-card.c>
	owner module: 6
	properties:
		alsa.card = "0"
		alsa.card_name = "HDA Intel PCH"
		alsa.long_card_name = "HDA Intel PCH at 0xef228000 irq 128"
		alsa.driver_name = "snd_hda_intel"
		device.bus_path = "pci-0000:00:1f.3"
		sysfs.path = "/devices/pci0000:00/0000:00:1f.3/sound/card0"
		device.bus = "pci"
		device.vendor.id = "8086"
		device.vendor.name = "Intel Corporation"
		device.product.id = "9d71"
		device.product.name = "Sunrise Point-LP HD Audio"
		device.form_factor = "internal"
		device.string = "0"
		device.description = "Audio interne"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card-pci"
	profiles:
		input:analog-stereo: Entrée Stéréo analogique (priority 65, available: unknown)
		output:analog-stereo: Sortie Stéréo analogique (priority 6500, available: unknown)
		output:analog-stereo+input:analog-stereo: Duplex stéréo analogique (priority 6565, available: unknown)
		output:hdmi-stereo: Sortie Digital Stereo (HDMI) (priority 5900, available: no)
		output:hdmi-stereo+input:analog-stereo: Sortie Digital Stereo (HDMI) + Entrée Stéréo analogique (priority 5965, available: no)
		output:hdmi-surround: Sortie Digital Surround 5.1 (HDMI) (priority 800, available: no)
		output:hdmi-surround+input:analog-stereo: Sortie Digital Surround 5.1 (HDMI) + Entrée Stéréo analogique (priority 865, available: no)
		output:hdmi-surround71: Sortie Digital Surround 7.1 (HDMI) (priority 800, available: no)
		output:hdmi-surround71+input:analog-stereo: Sortie Digital Surround 7.1 (HDMI) + Entrée Stéréo analogique (priority 865, available: no)
		output:hdmi-stereo-extra1: Sortie Digital Stereo (HDMI 2) (priority 5700, available: no)
		output:hdmi-stereo-extra1+input:analog-stereo: Sortie Digital Stereo (HDMI 2) + Entrée Stéréo analogique (priority 5765, available: no)
		output:hdmi-surround-extra1: Sortie Digital Surround 5.1 (HDMI 2) (priority 600, available: no)
		output:hdmi-surround-extra1+input:analog-stereo: Sortie Digital Surround 5.1 (HDMI 2) + Entrée Stéréo analogique (priority 665, available: no)
		output:hdmi-surround71-extra1: Sortie Digital Surround 7.1 (HDMI 2) (priority 600, available: no)
		output:hdmi-surround71-extra1+input:analog-stereo: Sortie Digital Surround 7.1 (HDMI 2) + Entrée Stéréo analogique (priority 665, available: no)
		output:hdmi-stereo-extra2: Sortie Digital Stereo (HDMI 3) (priority 5700, available: no)
		output:hdmi-stereo-extra2+input:analog-stereo: Sortie Digital Stereo (HDMI 3) + Entrée Stéréo analogique (priority 5765, available: no)
		output:hdmi-surround-extra2: Sortie Digital Surround 5.1 (HDMI 3) (priority 600, available: no)
		output:hdmi-surround-extra2+input:analog-stereo: Sortie Digital Surround 5.1 (HDMI 3) + Entrée Stéréo analogique (priority 665, available: no)
		output:hdmi-surround71-extra2: Sortie Digital Surround 7.1 (HDMI 3) (priority 600, available: no)
		output:hdmi-surround71-extra2+input:analog-stereo: Sortie Digital Surround 7.1 (HDMI 3) + Entrée Stéréo analogique (priority 665, available: no)
		output:hdmi-stereo-extra3: Sortie Digital Stereo (HDMI 4) (priority 5700, available: no)
		output:hdmi-stereo-extra3+input:analog-stereo: Sortie Digital Stereo (HDMI 4) + Entrée Stéréo analogique (priority 5765, available: no)
		output:hdmi-surround-extra3: Sortie Digital Surround 5.1 (HDMI 4) (priority 600, available: no)
		output:hdmi-surround-extra3+input:analog-stereo: Sortie Digital Surround 5.1 (HDMI 4) + Entrée Stéréo analogique (priority 665, available: no)
		output:hdmi-surround71-extra3: Sortie Digital Surround 7.1 (HDMI 4) (priority 600, available: no)
		output:hdmi-surround71-extra3+input:analog-stereo: Sortie Digital Surround 7.1 (HDMI 4) + Entrée Stéréo analogique (priority 665, available: no)
		output:hdmi-stereo-extra4: Sortie Digital Stereo (HDMI 5) (priority 5700, available: no)
		output:hdmi-stereo-extra4+input:analog-stereo: Sortie Digital Stereo (HDMI 5) + Entrée Stéréo analogique (priority 5765, available: no)
		output:hdmi-surround-extra4: Sortie Digital Surround 5.1 (HDMI 5) (priority 600, available: no)
		output:hdmi-surround-extra4+input:analog-stereo: Sortie Digital Surround 5.1 (HDMI 5) + Entrée Stéréo analogique (priority 665, available: no)
		output:hdmi-surround71-extra4: Sortie Digital Surround 7.1 (HDMI 5) (priority 600, available: no)
		output:hdmi-surround71-extra4+input:analog-stereo: Sortie Digital Surround 7.1 (HDMI 5) + Entrée Stéréo analogique (priority 665, available: no)
		off: Éteint (priority 0, available: unknown)
	active profile: <output:analog-stereo+input:analog-stereo>
	sinks:
		alsa_output.pci-0000_00_1f.3.analog-stereo/#0: Audio interne Stéréo analogique
	sources:
		alsa_output.pci-0000_00_1f.3.analog-stereo.monitor/#0: Monitor of Audio interne Stéréo analogique
		alsa_input.pci-0000_00_1f.3.analog-stereo/#1: Audio interne Stéréo analogique
	ports:
		analog-input-internal-mic: Microphone interne (priority 8900, latency offset 0 usec, available: unknown)
			properties:
				device.icon_name = "audio-input-microphone"
		analog-input-headset-mic: Microphone casque (priority 8800, latency offset 0 usec, available: no)
			properties:
				device.icon_name = "audio-input-microphone"
		analog-output-speaker: Haut-parleurs (priority 10000, latency offset 0 usec, available: no)
			properties:
				device.icon_name = "audio-speakers"
		analog-output-headphones: Casque audio (priority 9900, latency offset 0 usec, available: yes)
			properties:
				device.icon_name = "audio-headphones"
		hdmi-output-0: HDMI / DisplayPort (priority 5900, latency offset 0 usec, available: no)
			properties:
				device.icon_name = "video-display"
		hdmi-output-1: HDMI / DisplayPort 2 (priority 5800, latency offset 0 usec, available: no)
			properties:
				device.icon_name = "video-display"
		hdmi-output-2: HDMI / DisplayPort 3 (priority 5700, latency offset 0 usec, available: no)
			properties:
				device.icon_name = "video-display"
		hdmi-output-3: HDMI / DisplayPort 4 (priority 5600, latency offset 0 usec, available: no)
			properties:
				device.icon_name = "video-display"
		hdmi-output-4: HDMI / DisplayPort 5 (priority 5500, latency offset 0 usec, available: no)
			properties:
				device.icon_name = "video-display"
pacmd list-sinks
1 sink(s) available.
  * index: 0
	name: <alsa_output.pci-0000_00_1f.3.analog-stereo>
	driver: <module-alsa-card.c>
	flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY 
	state: SUSPENDED
	suspend cause: IDLE
	priority: 9039
	volume: front-left: 12890 /  20% / -42,37 dB,   front-right: 12890 /  20% / -42,37 dB
	        balance 0,00
	base volume: 65536 / 100% / 0,00 dB
	volume steps: 65537
	muted: yes
	current latency: 0,00 ms
	max request: 0 KiB
	max rewind: 0 KiB
	monitor source: 0
	sample spec: s16le 2ch 44100Hz
	channel map: front-left,front-right
	             Stéréo
	used by: 0
	linked by: 0
	fixed latency: 99,95 ms
	card: 0 <alsa_card.pci-0000_00_1f.3>
	module: 6
	properties:
		alsa.resolution_bits = "16"
		device.api = "alsa"
		device.class = "sound"
		alsa.class = "generic"
		alsa.subclass = "generic-mix"
		alsa.name = "ALC294 Analog"
		alsa.id = "ALC294 Analog"
		alsa.subdevice = "0"
		alsa.subdevice_name = "subdevice #0"
		alsa.device = "0"
		alsa.card = "0"
		alsa.card_name = "HDA Intel PCH"
		alsa.long_card_name = "HDA Intel PCH at 0xef228000 irq 128"
		alsa.driver_name = "snd_hda_intel"
		device.bus_path = "pci-0000:00:1f.3"
		sysfs.path = "/devices/pci0000:00/0000:00:1f.3/sound/card0"
		device.bus = "pci"
		device.vendor.id = "8086"
		device.vendor.name = "Intel Corporation"
		device.product.id = "9d71"
		device.product.name = "Sunrise Point-LP HD Audio"
		device.form_factor = "internal"
		device.string = "front:0"
		device.buffering.buffer_size = "17632"
		device.buffering.fragment_size = "4408"
		device.access_mode = "mmap"
		device.profile.name = "analog-stereo"
		device.profile.description = "Stéréo analogique"
		device.description = "Audio interne Stéréo analogique"
		alsa.mixer_name = "Realtek ALC294"
		alsa.components = "HDA:10ec0294,10431c20,00100004 HDA:8086280b,80860101,00100000"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card-pci"
	ports:
		analog-output-speaker: Haut-parleurs (priority 10000, latency offset 0 usec, available: no)
			properties:
				device.icon_name = "audio-speakers"
		analog-output-headphones: Casque audio (priority 9900, latency offset 0 usec, available: yes)
			properties:
				device.icon_name = "audio-headphones"
	active port: <analog-output-headphones>
pacmd list-sink-inputs
0 sink input(s) available.

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#4 2020-04-30 14:48:44

orfelle
Member
Registered: 2020-04-17
Posts: 3

Re: Weird audio signal when using audio jack - ALSA

So my problem isn't solved yet, but I've noticed something strange.
When my headset isn't plugged in, the internal microphone of my laptop is used, and I can record with it. But I had an idea, so I tried to plug in my headset while recording in audacity.
So, when the headset is plugged in, audacity start to be really slow, and record some strange things. When I unplug my headset, everything is normal again. It seems to be a DC, I don't know why. Maybe the computer send some power to the headset thinking that it is a microphone ? And the power is leaking everywhere ? It doesn't do that on windows so I know this is not a hardware issue, and my headset and my jack connector work pretty well. So maybe there is some configuration to do with ALSA to change that ?
What do you think ?

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