I've got a 2012 MacBook (10.1). The sound coming out of the speakers is alright. The sound coming out of the headphones is "broken". It's just like as if only a part of the signal is coming through. When I listen to songs, the voice is quite silent. Maybe, the "mid" signal is missing and only the "side" signal is coming through, but it sounds a bit mono-ish. Though some sound is there, I have checked many "no sound" questions already to make sure it is not a general driver thing.
At first I was irritated to find two soundcards in my computer and I wondered if they might be conflicting. But the second one is for the HDMI port, so I guess this is not the issue here.
I can imagine that it is just a hardware problem. The headphones jack seems to be alright - there is no change in sound if I push the cable slightly in different directions. Still, it could be a broken circuit or just conducting dust in the jack. (The problem persists for different headphones whereas the headphones are working fine on other devices.)
I want to make sure if I can fix it or not.
- Are there ways to configure the channels (left and right) of a soundcard?
(Remember, that "mid" and "side" are only sum and difference of left
and right.)
- Any other ideas what to check or configure?
Here are some console outputs:
$ pacmd list-cards
2 card(s) available.
index: 0
name: <alsa_card.pci-0000_01_00.1>
driver: <module-alsa-card.c>
owner module: 7
properties:
alsa.card = "1"
alsa.card_name = "HDA NVidia"
alsa.long_card_name = "HDA NVidia at 0xc1080000 irq 17"
alsa.driver_name = "snd_hda_intel"
device.bus_path = "pci-0000:01:00.1"
sysfs.path = "/devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1"
device.bus = "pci"
device.vendor.id = "10de"
device.vendor.name = "NVIDIA Corporation"
device.product.id = "0e1b"
device.product.name = "GK107 HDMI Audio Controller"
device.string = "1"
device.description = "GK107 HDMI Audio Controller"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-pci"
...
index: 1
name: <alsa_card.pci-0000_00_1b.0>
driver: <module-alsa-card.c>
owner module: 8
properties:
alsa.card = "0"
alsa.card_name = "HDA Intel PCH"
alsa.long_card_name = "HDA Intel PCH at 0xc1c10000 irq 54"
alsa.driver_name = "snd_hda_intel"
device.bus_path = "pci-0000:00:1b.0"
sysfs.path = "/devices/pci0000:00/0000:00:1b.0/sound/card0"
device.bus = "pci"
device.vendor.id = "8086"
device.vendor.name = "Intel Corporation"
device.product.id = "1e20"
device.product.name = "7 Series/C216 Chipset Family High Definition Audio Controller"
device.form_factor = "internal"
device.string = "0"
device.description = "Eingebautes Tongerät"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-pci"
profiles:
HiFi: Play HiFi quality Music (priority 40768, available: unknown)
off: Aus (priority 0, available: unknown)
active profile: <HiFi>
sinks:
alsa_output.pci-0000_00_1b.0.HiFi__hw_PCH__sink/#0: Eingebautes Tongerät Speaker + Headphones
sources:
alsa_output.pci-0000_00_1b.0.HiFi__hw_PCH__sink.monitor/#0: Monitor of Eingebautes Tongerät Speaker + Headphones
alsa_input.pci-0000_00_1b.0.HiFi__hw_PCH__source/#1: Eingebautes Tongerät Headphones Stereo Microphone
ports:
[Out] Speaker: Speaker (priority 100, latency offset 0 usec, available: unknown)
properties:
[Out] Headphones: Headphones (priority 200, latency offset 0 usec, available: yes)
properties:
[In] Mic2: Headphones Stereo Microphone (priority 200, latency offset 0 usec, available: unknown)
properties:
$ aplay -l
**** Liste der Hardware-Geräte (PLAYBACK) ****
Karte 0: PCH [HDA Intel PCH], Gerät 0: CS4206 Analog [CS4206 Analog]
Sub-Geräte: 1/1
Sub-Gerät #0: subdevice #0
Karte 0: PCH [HDA Intel PCH], Gerät 1: CS4206 Digital [CS4206 Digital]
Sub-Geräte: 1/1
Sub-Gerät #0: subdevice #0
Karte 1: NVidia [HDA NVidia], Gerät 3: HDMI 0 [HDMI 0]
Sub-Geräte: 1/1
Sub-Gerät #0: subdevice #0
Karte 1: NVidia [HDA NVidia], Gerät 7: HDMI 1 [HDMI 1]
Sub-Geräte: 1/1
Sub-Gerät #0: subdevice #0
...
$ sudo lshw -short | grep multimedia
/0/100/1/0.1 multimedia GK107 HDMI Audio Controller
/0/100/1a/1/1/1 multimedia FaceTime HD Camera (Built-in)
/0/100/1b multimedia 7 Series/C216 Chipset Family High Definition Audio Controller
$ sudo lshw -html
id:
multimedia
Beschreibung: Audio device
Produkt: GK107 HDMI Audio Controller
Hersteller: NVIDIA Corporation
Physische ID:
0.1
Bus-Informationen:
pci@0000:01:00.1
Version: a1
Breite: 32 bits
Takt: 33MHz
Fähigkeiten: pm msi pciexpress bus_master cap_list
Konfiguration:
driver = snd_hda_intel
latency = 0
Ressourcen:
irq : 17
memory : c1080000-c1083fff
id:
multimedia
Beschreibung: Audio device
Produkt: 7 Series/C216 Chipset Family High Definition Audio Controller
Hersteller: Intel Corporation
Physische ID:
1b
Bus-Informationen:
pci@0000:00:1b.0
Version: 04
Breite: 64 bits
Takt: 33MHz
Fähigkeiten: pm msi pciexpress bus_master cap_list
Konfiguration:
driver = snd_hda_intel
latency = 0
Ressourcen:
irq : 54
memory : c1c10000-c1c13fff
$ dmesg | grep snd
[ 4.292305] snd_hda_intel 0000:00:1b.0: enabling device (0000 -> 0002)
[ 4.301855] snd_hda_intel 0000:01:00.1: enabling device (0000 -> 0002)
[ 4.301951] snd_hda_intel 0000:01:00.1: Disabling MSI
[ 4.301958] snd_hda_intel 0000:01:00.1: Handle vga_switcheroo audio client
[ 4.465778] snd_hda_intel 0000:00:1b.0: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
[ 4.465862] snd_hda_intel 0000:01:00.1: bound 0000:01:00.0 (ops nv50_audio_component_bind_ops [nouveau])
[ 4.484481] snd_hda_codec_cirrus hdaudioC0D0: autoconfig for CS4206: line_outs=2 (0xb/0xa/0x0/0x0/0x0) type:speaker
[ 4.484485] snd_hda_codec_cirrus hdaudioC0D0: speaker_outs=0 (0x0/0x0/0x0/0x0/0x0)
[ 4.484487] snd_hda_codec_cirrus hdaudioC0D0: hp_outs=1 (0x9/0x0/0x0/0x0/0x0)
[ 4.484488] snd_hda_codec_cirrus hdaudioC0D0: mono: mono_out=0x0
[ 4.484489] snd_hda_codec_cirrus hdaudioC0D0: dig-out=0x10/0x0
[ 4.484490] snd_hda_codec_cirrus hdaudioC0D0: inputs:
[ 4.484492] snd_hda_codec_cirrus hdaudioC0D0: Mic=0xe
EDIT 11.11.2022 20:51 CET
I ran the alsa-info script (wget http://www.alsa-project.org/alsa-info.sh -O alsa-info.sh && bash alsa-info.sh) for additional information. Results are here.
