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System configuration files for the T2 audio driver (https://github.com/MCMrARM/mbp2018-bridge-drv/)
SUBSYSTEM!="sound", GOTO="pulseaudio_end"
ACTION!="change", GOTO="pulseaudio_end"
KERNEL!="card*", GOTO="pulseaudio_end"
SUBSYSTEMS=="pci", ATTRS{vendor}=="0x106b", ATTRS{device}=="0x1803", ENV{PULSE_PROFILE_SET}="apple-t2.conf"
LABEL="pulseaudio_end"

The files go to:

  • /usr/share/alsa/cards/AppleT2.conf
  • /usr/share/pulseaudio/alsa-mixer/profile-sets/apple-t2.conf
  • /usr/lib/udev/rules.d/91-pulseaudio-custom.rules
[General]
auto-profiles = no
[Mapping builtin-speaker]
description = Built-in Speaker
device-strings = front:%f
paths-output = builtin-speaker-output
channel-map = front-left,front-right,rear-left,rear-right
priority = 100
direction = output
[Mapping builtin-mic]
description = Built-in Mic
device-strings = front:%f
paths-output = builtin-mic-input
channel-map = left,center,right
priority = 100
direction = input
[Mapping codec-output]
description = Headphone
device-strings = front:%f,1
paths-output = codec-output
channel-map = left,right
priority = 100
direction = output
[Mapping codec-input]
description = Headphone Mic
device-strings = front:%f,1
paths-output = codec-input
channel-map = mono
priority = 100
direction = input
[Profile output:builtin-speaker+input:builtin-mic]
description = Built-in Speaker + Built-in Mic
output-mappings = builtin-speaker
input-mappings = builtin-mic
skip-probe = yes
[Profile output:codec-output+input:builtin-mic]
description = Headphones + Built-in Mic
output-mappings = codec-output
input-mappings = builtin-mic
[Profile output:codec-output+input:codec-input]
description = Headphones + External Mic
output-mappings = codec-output
input-mappings = codec-input
[Profile output:builtin-speaker+input:codec-input]
description = Built-in Speaker + External Mic
output-mappings = builtin-speaker
input-mappings = codec-input
<confdir:pcm/front.conf>
<confdir:pcm/surround40.conf>
AppleT2.pcm.default {
@args [ CARD ]
@args.CARD {
type string
}
type asym
playback.pcm {
type plug
slave.pcm {
type hw
card $CARD
device 0
}
}
capture.pcm {
type plug
slave.pcm {
type hw
card $CARD
device 1
}
}
hint.device_output 0
hint.device_input 1
}
AppleT2.pcm.front.0 {
@args [ CARD ]
@args.CARD {
type string
}
type asym
playback.pcm {
type hw
card $CARD
device 0
}
capture.pcm {
type hw
card $CARD
device 1
}
hint.device_output 0
hint.device_input 1
}
AppleT2.pcm.front.1 {
@args [ CARD ]
@args.CARD {
type string
}
type asym
playback.pcm {
type hw
card $CARD
device 2
}
capture.pcm {
type hw
card $CARD
device 3
}
hint.device_output 2
hint.device_input 3
}
AppleT2.pcm.front.2 {
@args [ CARD ]
@args.CARD {
type string
}
type hw
card $CARD
device 4
}
@kevineinarsson
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kevineinarsson commented Mar 10, 2020

I got the speakers working on a MBP 16,1 by doing some small changes. I also included a sample config to make LFE remixing work so the woofer plays.

https://gist.github.com/kevineinarsson/8e5e92664f97508277fefef1b8015fba

@stefanpartheym
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stefanpartheym commented May 20, 2020

@kevineinarsson Nice work! I wonder if it would be possible to enable the woofer for the mbp15,2 too?
The point is, I have no clue about how to properly configure pulseaudio to enable LFE remixing. I tried to add

enable-lfe-remixing = yes

to my /etc/pulse/daemon.conf, however nothing changed. I suspect I need to modify my AppleT2.conf to look more like yours, but my last attempt wasn't a success 😄

@jbg
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jbg commented Aug 30, 2020

Anyone got mic working on MBP 15,2? With this config it appears in pulsemixer but always records silence.

@Redecorating
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Redecorating commented Oct 25, 2020

Some recent updates to ALSA seem to have changed where it looks for apple-t2.conf, I resolved that by copying it to the new directory:

sudo cp '/usr/share/pulseaudio/alsa-mixer/profile-sets/apple-t2.conf' '/usr/share/alsa-card-profile/mixer/profile-sets/apple-t2.conf'

Here's a reddit post I found about this change
And here's the errors pulseaudio was giving before I moved apple-t2.conf:

E: [pulseaudio] module-alsa-card.c: Failed to find a working profile.
E: [pulseaudio] module.c: Failed to load module "module-alsa-card" (argument: "device_id="0" name="pci-0000_04_00.3" card_name="alsa_card.pci-0000_04_00.3" namereg_fail=false tsched=yes fixed_latency_range=no ignore_dB=no deferred_volume=yes use_ucm=yes avoid_resampling=no card_properties="module-udev-detect.discovered=1""): initialization failed.
E: [pulseaudio] socket-server.c: bind(): Address already in use
E: [pulseaudio] module.c: Failed to load module "module-native-protocol-unix" (argument: ""): initialization failed.

@bigbadmonster17
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bigbadmonster17 commented Oct 4, 2021

I've used your profile and tweaked it to have it working on my 9,1 (Macbook Air 2020)
https://gist.github.com/bigbadmonster17/8b670ae29e0b7be2b73887f3f37a057b

Hope this helps someone out there

@ExperiBass
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ExperiBass commented Oct 16, 2021

Doesn’t allow for headphone usage on the Pro16,2

@nikodunk
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nikodunk commented Nov 26, 2021

Some recent updates to ALSA seem to have changed where it looks for apple-t2.conf, I resolved that by copying it to the new directory:

sudo cp '/usr/share/pulseaudio/alsa-mixer/profile-sets/apple-t2.conf' '/usr/share/alsa-card-profile/mixer/profile-sets/apple-t2.conf'

Here's a reddit post I found about this change

Thank you! Nothing was working for me until I did this. Now works swimmingly on Fedora 35 (even with Pipewire!)

@nikodunk
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nikodunk commented Nov 26, 2021

@MCMrARM the updated location for
/usr/share/pulseaudio/alsa-mixer/profile-sets/apple-t2.conf
is now
/usr/share/alsa-card-profile/mixer/profile-sets/apple-t2.conf

as @Redecorating mentioned above. Thank you so much everyone for the excellent profiles otherwise.

@tpchuckles
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tpchuckles commented Mar 6, 2022

If your mic crashes your OS, try adding "intel_iommu=on iommu=pt" to the "GRUB_CMDLINE_LINUX=" line in /etc/default/grub (then "sudo update-grub" for ubuntu, or "grub-mkconfig -o /boot/grub/grub.cfg"). Shoutout to @Redecorating for sharing this fix to us in the discord! I didn't see it documented anywhere else, so figured i'd throw it down as a comment here (since this is the first gist the wiki's audio section links to)

@Redecorating
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Redecorating commented Sep 12, 2022

@MCMrARM Do you know what license these files would be under?

@StudioCrash
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StudioCrash commented Sep 12, 2022

Are there any updates that might work with Pop!_OS since it now uses pipewire instead of pulseaudio?

@Redecorating
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Redecorating commented Sep 13, 2022

Are there any updates that might work with Pop!_OS since it now uses pipewire instead of pulseaudio?

https://wiki.t2linux.org/guides/audio-config/#using-pipewire-instead-of-pulseaudio the change here to 91-pulseaudio-custom.rules should work.

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