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Asus ROG Crosshair X870E hero (ACL4082) - No audio from rear microphone #652

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Asus ROG Crosshair X870E hero (ACL4082) - No audio from rear microphone#652
@fixed77

Description

@fixed77
fixed77
opened on Dec 3, 2025

The Rear Microphone is detected as Line In when I plug in my mic. There is no sound from the microphone. I don't use the Front Audio connection as my case doesn't have I/O for it, I just used the 2 audio ports in the rear.

Motherboard: Asus ROG Crosshair X870E hero
Audio Device: ALC4082
Distro: Ubuntu 24.04
Window Manager: Gnome-Shell
Packages:

alsa-base/noble,noble,now 1.0.25+dfsg-0ubuntu7
alsa-topology-conf/noble,noble,now 1.2.5.1-2
alsa-ucm-conf/noble-updates,noble-updates,now 1.2.10-1ubuntu5.7
alsa-utils/noble,now 1.2.9-1ubuntu5
gstreamer1.0-alsa/noble-updates,noble-security,now 1.24.2-1ubuntu0.3
gstreamer1.0-pipewire/noble-updates,now 1.0.5-1ubuntu3.1
gstreamer1.0-pulseaudio/noble-updates,noble-security,now 1.24.2-1ubuntu1.2
libpipewire-0.3-0t64/noble-updates,now 1.0.5-1ubuntu3.1
libpipewire-0.3-common/noble-updates,noble-updates,now 1.0.5-1ubuntu3.1
libpipewire-0.3-modules/noble-updates,now 1.0.5-1ubuntu3.1
pipewire-alsa/noble-updates,now 1.0.5-1ubuntu3.1
pipewire-audio/noble-updates,noble-updates,now 1.0.5-1ubuntu3.1
pipewire-bin/noble-updates,now 1.0.5-1ubuntu3.1
pipewire-pulse/noble-updates,now 1.0.5-1ubuntu3.1
pipewire/noble-updates,now 1.0.5-1ubuntu3.1
pulseaudio-utils/noble-updates,now 1:16.1+dfsg1-2ubuntu10.1

lsusb | grep -i audio

Bus 001 Device 009: ID 0b05:1b7c ASUSTek Computer, Inc. USB Audio

alsactl monitor (unplugging and plugging mic)

node hw:2, #12 (0,0,0,Line - Input Jack,0) VALUE
node hw:2, #12 (0,0,0,Line - Input Jack,0) VALUE
node hw:2, #12 (0,0,0,Line - Input Jack,0) VALUE
node hw:2, #12 (0,0,0,Line - Input Jack,0) VALUE

amixer -c 2 contents

numid=8,iface=CARD,name='Analog In - Input Jack'
  ; type=BOOLEAN,access=r-------,values=1
  : values=on
numid=11,iface=CARD,name='Clock Source 1 Validity'
  ; type=BOOLEAN,access=r-------,values=1
  : values=on
numid=15,iface=CARD,name='Clock Source 3 Validity'
  ; type=BOOLEAN,access=r-------,values=1
  : values=on
numid=19,iface=CARD,name='Clock Source 4 Validity'
  ; type=BOOLEAN,access=r-------,values=1
  : values=on
numid=22,iface=CARD,name='Clock Source 5 Validity'
  ; type=BOOLEAN,access=r-------,values=1
  : values=on
numid=26,iface=CARD,name='Clock Source 7 Validity'
  ; type=BOOLEAN,access=r-------,values=1
  : values=on
numid=29,iface=CARD,name='Clock Source 8 Validity'
  ; type=BOOLEAN,access=r-------,values=1
  : values=on
numid=27,iface=CARD,name='Headphone - Output Jack'
  ; type=BOOLEAN,access=r-------,values=1
  : values=off
numid=30,iface=CARD,name='IEC958 In - Output Jack'
  ; type=BOOLEAN,access=r-------,values=1
  : values=on
numid=12,iface=CARD,name='Line - Input Jack'
  ; type=BOOLEAN,access=r-------,values=1
  : values=on
numid=16,iface=CARD,name='Mic - Input Jack'
  ; type=BOOLEAN,access=r-------,values=1
  : values=off
numid=23,iface=CARD,name='Speaker - Output Jack'
  ; type=BOOLEAN,access=r-------,values=1
  : values=on
numid=20,iface=MIXER,name='PCM Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=24,iface=MIXER,name='PCM Playback Switch',index=1
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=28,iface=MIXER,name='PCM Playback Switch',index=2
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=21,iface=MIXER,name='PCM Playback Volume'
  ; type=INTEGER,access=rw---R--,values=8,min=0,max=87,step=0
  : values=56,56,56,56,56,56,56,56
  | dBminmax-min=-65.25dB,max=0.00dB
numid=25,iface=MIXER,name='PCM Playback Volume',index=1
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=255,step=0
  : values=215,215
  | dBminmax-min=-127.50dB,max=0.00dB
numid=13,iface=MIXER,name='Line Capture Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=14,iface=MIXER,name='Line Capture Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=39,step=0
  : values=39,39
  | dBminmax-min=-17.25dB,max=12.00dB
numid=17,iface=MIXER,name='Mic Capture Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=18,iface=MIXER,name='Mic Capture Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=39,step=0
  : values=39,39
  | dBminmax-min=-17.25dB,max=12.00dB
numid=9,iface=MIXER,name='Analog In Capture Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=10,iface=MIXER,name='Analog In Capture Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=39,step=0
  : values=39,39
  | dBminmax-min=-17.25dB,max=12.00dB
numid=1,iface=PCM,name='Capture Channel Map'
  ; type=INTEGER,access=r--v-R--,values=2,min=0,max=36,step=0
  : values=0,0
  | container
    | chmap-fixed=FL,FR
numid=4,iface=PCM,name='Playback Channel Map'
  ; type=INTEGER,access=r--v-R--,values=2,min=0,max=36,step=0
  : values=3,4
  | container
    | chmap-fixed=FL,FR
    | chmap-fixed=FL,FR,RL,RR
    | chmap-fixed=FL,FR,FC,LFE,RL,RR
    | chmap-fixed=FL,FR,FC,LFE,RL,RR,SL,SR
numid=2,iface=PCM,name='Capture Channel Map',device=1
  ; type=INTEGER,access=r--v-R--,values=2,min=0,max=36,step=0
  : values=3,4
  | container
    | chmap-fixed=FL,FR
numid=5,iface=PCM,name='Playback Channel Map',device=1
  ; type=INTEGER,access=r--v-R--,values=2,min=0,max=36,step=0
  : values=0,0
  | container
    | chmap-fixed=FL,FR
numid=3,iface=PCM,name='Capture Channel Map',device=2
  ; type=INTEGER,access=r--v-R--,values=2,min=0,max=36,step=0
  : values=0,0
  | container
    | chmap-fixed=FL,FR
numid=6,iface=PCM,name='Playback Channel Map',device=2
  ; type=INTEGER,access=r--v-R--,values=2,min=0,max=36,step=0
  : values=0,0
  | container
    | chmap-fixed=FL,FR
numid=7,iface=PCM,name='Playback Channel Map',device=3
  ; type=INTEGER,access=r--v-R--,values=2,min=0,max=36,step=0
  : values=0,0
  | container
    | chmap-fixed=FL,FR

arecord -l

**** List of CAPTURE Hardware Devices ****
card 2: Audio [USB Audio], device 0: USB Audio [USB Audio]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 2: Audio [USB Audio], device 1: USB Audio [USB Audio #1]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
card 2: Audio [USB Audio], device 2: USB Audio [USB Audio #2]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

alsaucm -c hw:2 dump text

Verb.HiFi {
	Comment "HiFi 2.0 channels"
	Device.Speaker {
		Comment Speakers
		Values {
			CaptureCTL "_ucm0001.hw:Audio"
			JackControl "Speaker - Output Jack"
			PlaybackCTL "_ucm0001.hw:Audio"
			PlaybackChannels 2
			PlaybackMixerElem PCM,0
			PlaybackPCM "_ucm0001.hw:Audio"
			PlaybackPriority 200
			TQ HiFi
		}
	}
	Device.Headphones {
		Comment "Front Headphones"
		Values {
			CaptureCTL "_ucm0001.hw:Audio"
			JackControl "Headphone - Output Jack"
			PlaybackCTL "_ucm0001.hw:Audio"
			PlaybackMixerElem PCM,1
			PlaybackPCM "_ucm0001.hw:Audio,1"
			PlaybackPriority 300
			TQ HiFi
		}
	}
	Device.SPDIF {
		Comment "S/PDIF Output"
		Values {
			CaptureCTL "_ucm0001.hw:Audio"
			PlaybackCTL "_ucm0001.hw:Audio"
			PlaybackMixerElem PCM,2
			PlaybackPCM "_ucm0001.hw:Audio,3"
			PlaybackPriority 100
			TQ HiFi
		}
	}
	Device.Line1 {
		Comment "Line Input"
		Values {
			CaptureCTL "_ucm0001.hw:Audio"
			CaptureMixerElem Line,0
			CapturePCM "_ucm0001.hw:Audio,1"
			CapturePriority 100
			JackControl "Line - Input Jack"
			PlaybackCTL "_ucm0001.hw:Audio"
			TQ HiFi
		}
	}
	Device.Mic1 {
		Comment Microphone
		Values {
			CaptureCTL "_ucm0001.hw:Audio"
			CaptureMixerElem Mic,0
			CapturePCM "_ucm0001.hw:Audio,2"
			CapturePriority 300
			JackControl "Mic - Input Jack"
			PlaybackCTL "_ucm0001.hw:Audio"
			TQ HiFi
		}
	}
}
Verb."HiFi 5+1" {
	Comment "HiFi 5.1 channels"
	Device.Speaker {
		Comment Speakers
		Values {
			CaptureCTL "_ucm0001.hw:Audio"
			JackControl "Speaker - Output Jack"
			PlaybackCTL "_ucm0001.hw:Audio"
			PlaybackChannels 6
			PlaybackMixerElem PCM,0
			PlaybackPCM "_ucm0001.hw:Audio"
			PlaybackPriority 200
			TQ HiFi
		}
	}
	Device.Headphones {
		Comment "Front Headphones"
		Values {
			CaptureCTL "_ucm0001.hw:Audio"
			JackControl "Headphone - Output Jack"
			PlaybackCTL "_ucm0001.hw:Audio"
			PlaybackMixerElem PCM,1
			PlaybackPCM "_ucm0001.hw:Audio,1"
			PlaybackPriority 300
			TQ HiFi
		}
	}
	Device.SPDIF {
		Comment "S/PDIF Output"
		Values {
			CaptureCTL "_ucm0001.hw:Audio"
			PlaybackCTL "_ucm0001.hw:Audio"
			PlaybackMixerElem PCM,2
			PlaybackPCM "_ucm0001.hw:Audio,3"
			PlaybackPriority 100
			TQ HiFi
		}
	}
	Device.Line1 {
		Comment "Line Input"
		Values {
			CaptureCTL "_ucm0001.hw:Audio"
			CaptureMixerElem Line,0
			CapturePCM "_ucm0001.hw:Audio,1"
			CapturePriority 100
			JackControl "Line - Input Jack"
			PlaybackCTL "_ucm0001.hw:Audio"
			TQ HiFi
		}
	}
	Device.Mic1 {
		Comment Microphone
		Values {
			CaptureCTL "_ucm0001.hw:Audio"
			CaptureMixerElem Mic,0
			CapturePCM "_ucm0001.hw:Audio,2"
			CapturePriority 300
			JackControl "Mic - Input Jack"
			PlaybackCTL "_ucm0001.hw:Audio"
			TQ HiFi
		}
	}
}
Verb."HiFi 7+1" {
	Comment "HiFi 7.1 channels"
	Device.Speaker {
		Comment Speakers
		Values {
			CaptureCTL "_ucm0001.hw:Audio"
			JackControl "Speaker - Output Jack"
			PlaybackCTL "_ucm0001.hw:Audio"
			PlaybackChannels 8
			PlaybackMixerElem PCM,0
			PlaybackPCM "_ucm0001.hw:Audio"
			PlaybackPriority 200
			TQ HiFi
		}
	}
	Device.Headphones {
		Comment "Front Headphones"
		Values {
			CaptureCTL "_ucm0001.hw:Audio"
			JackControl "Headphone - Output Jack"
			PlaybackCTL "_ucm0001.hw:Audio"
			PlaybackMixerElem PCM,1
			PlaybackPCM "_ucm0001.hw:Audio,1"
			PlaybackPriority 300
			TQ HiFi
		}
	}
	Device.SPDIF {
		Comment "S/PDIF Output"
		Values {
			CaptureCTL "_ucm0001.hw:Audio"
			PlaybackCTL "_ucm0001.hw:Audio"
			PlaybackMixerElem PCM,2
			PlaybackPCM "_ucm0001.hw:Audio,3"
			PlaybackPriority 100
			TQ HiFi
		}
	}
	Device.Line1 {
		Comment "Line Input"
		Values {
			CaptureCTL "_ucm0001.hw:Audio"
			CaptureMixerElem Line,0
			CapturePCM "_ucm0001.hw:Audio,1"
			CapturePriority 100
			JackControl "Line - Input Jack"
			PlaybackCTL "_ucm0001.hw:Audio"
			TQ HiFi
		}
	}
	Device.Mic1 {
		Comment Microphone
		Values {
			CaptureCTL "_ucm0001.hw:Audio"
			CaptureMixerElem Mic,0
			CapturePCM "_ucm0001.hw:Audio,2"
			CapturePriority 300
			JackControl "Mic - Input Jack"
			PlaybackCTL "_ucm0001.hw:Audio"
			TQ HiFi
		}
	}
}

alsa-info.txt

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