Macbook Pro 16 (2019) Install+Quirks

[elevins]

First time i tried installing Omarchy on this macbook was around the time T2 mac support was introduced. Didnt work that great but i didn't document anything. So thought i would put this here for anyone else having issues since with 3.4.1 i got a much more workable installation.

Omarchy 3.4.1 ISO loaded, keyboard worked right from the start which was a surprise.

Hybrid GPU Issues

After install login screen would be followed by nothing and I needed to plug in an external monitor to get anywhere. Following this guide:

https://wiki.t2linux.org/guides/hybrid-graphics/

Set iGPU as main, set amd gpu power level to low, then enable igpu at boot per the guide above. Then i got a "ghost display" so had to disable it via the monitor config with

monitor = eDP-2, disable

Haven't testing any applications using the dGPU tho.

Keyboard/Touchbar/Backlight

The touchbar apparently boots with one of two random id's based on the function mode and only one of them works so thats cool. Coin flip simulator on boot whether or not the touchbar loads up. Haven't found a good solution to this.

Post install the touchbar functions improperly

• brightness controls affected the touchbar brightness display instead of the backlight display
• kbd brightness controls did nothing as its also pointed at the wrong device
• a few unused keys like mute and search

Remedy
In hyperland config

unbind = , XF86MonBrightnessUp
unbind = , XF86MonBrightnessDown

bind = , XF86MonBrightnessUp, exec, brightnessctl -d gmux_backlight set +10% && omarchy-swayosd-brightness "$(brightnessctl -d gmux_backlight -m | cut -d',' -f4 | tr -d '%')"
bind = , XF86MonBrightnessDown, exec, brightnessctl -d gmux_backlight set 10%- && omarchy-swayosd-brightness "$(brightnessctl -d gmux_backlight -m | cut -d',' -f4 | tr -d '%')"

unbind = , XF86KbdBrightnessUp
unbind = , XF86KbdBrightnessDown

bind = , XF86KbdBrightnessUp, exec, brightnessctl -d :white:kbd_backlight set +20% && omarchy-swayosd-kbd-brightness $(( $(brightnessctl -d ':white:kbd_backlight' get) * 100 / $(brightnessctl -d ':white:kbd_backlight' max) ))
bind = , XF86KbdBrightnessDown, exec, brightnessctl -d :white:kbd_backlight set 20%- && omarchy-swayosd-kbd-brightness $(( $(brightnessctl -d ':white:kbd_backlight' get) * 100 / $(brightnessctl -d ':white:kbd_backlight' max) ))

#unused mic button to toggle mute, could not find icon to change or display like volume/brightness function so used a notification
unbind = , XF86AudioMicMute
bind = , XF86AudioMicMute, exec, ~/.local/bin/mic-toggle

#unused search button to open menu 
bind = , XF86Search, exec, omarchy-menu

mic-toggle script

#!/bin/bash
pactl set-source-mute alsa_input.pci-0000_04_00.3.BuiltinMic toggle
if pactl get-source-mute alsa_input.pci-0000_04_00.3.BuiltinMic | grep -q yes; then
    notify-send "Mic Muted" -i microphone-off
else
    notify-send "Mic Unmuted" -i microphone
fi

Sleep/Hibernation

Nothing i attempt even got close to getting sleep/hibernate working so i disabled them both and made nothing happen when the lid is closed to prevent unwanted crashes.

Hopefully this helps anyone with similar hardware troubleshoot some issues. Will hopefully circle back to the touchbar/lid closing issues in the future.