[GUIDE] Working boot + suspend of Omarchy v4 on MBP 2019

[Sh1d0w]

Hi all,

Six months ago I've tried Omarchy v3 on my MBP 2019, since next version of MacOS would drop support for intel macs. There were numerous issues back then - lid close / wake was not working, fans had issues. I gave up back then and went back to MacOS.

With Omarchy v4 released a few days ago I decided to give it another try. Overall system stability is great everything is working flalessly and smoothly. Great experience and I am never going back to MacOS!

There were two issues however, specifically on my model - intel MBP Pro 2019 (16 inch). In this guide I will tell you how to fix them and if someone decides can open a PR with a fix, since I am not into the linux os development.

1. The first issue was a big blocker if you don't know what to do. Right after install, when you type your password you will land on a black screen that never renders anything. I've found out that this was due to the hybrid graphics on that specific model. There is a race condition during boot between i915 and amdgpu. To be able to boot into the GUI and fix this we have to do a temporary fix into the boot parameters. The caveat here is that you will need physical keyboard connected to the macbook, as you need to press F10 (touch bar is not working during boot, I haven't dug into why). So the steps are:

• Cold boot
• On the first screen where you have t2-linux selected press "e" to edit the boot parameters and add module_blacklist=amdgpu. Then press F10 to boot.

Because we temporarily disable amdgpu the race condition is gone and we can boot into the GUI.

Once you login, open the terminal and create this file:

/etc/modprobe.d/apple-gmux.conf

options apple_gmux force_igd=y

This tells apple-gmux to switch the display to the integrated intel GPU, so it won't race and try to use the amdgpu.

You need to rebuild the initramfs/UKI: sudo mkinitcpio -P

2. Second issue is the susped / wake issue when you close and opn the laptop lid. The issue here is that hyprland detects the second GPU as external display and tries to use it even if it is not ready yet after wake up, causing again permanent black screen. To solve that edit:

~/.config/hypr/monitors.lua

Append this to the end of the file:

-- eDP-2 is not a real display: it is the AMD dGPU's side of the same internal
-- panel connector. `apple_gmux force_igd=y` routes the panel to the Intel iGPU,
-- so the AMD eDP transmitter still asserts HPD but has no EDID and no modes.
-- Hyprland brings it up at 0x0 and numbered workspaces land on it. Must come
-- after the catch-all rule above, which matches every output.
hl.monitor({ output = "eDP-2", disabled = true })

That's it. Now reboot, everything should work smoothly.

NB: The resume from suspend takes ~20 seconds. During that time your screen will be black but don't worry. You just need to open the lid and be patient.

Hope it helps others with same model laptop.

Enjoy!

@dhh you can review this and if you decide you can include it as a patch.

[TAR5]

plugging in a studio display is also not working. had codex try to fix it by building a linux-t2 kernel with a patch for studio display support, but it did not work.

[TAR5]

codex-xhigh got it working eventually: https://github.com/TAR5/t2-studio-display-linux

[bep]

Hope it helps other with same model laptop.

I'm one, thank you! Me and Claude had almost given up getting the dual GPU setup working (after 4 ours of rebooting ...) when I found this guide. 10 minutes and I had a working install.