MacBook 2019 - Hardware Errors prevent logging in

[half sun]

Hi all, I'm having problems logging into newly-installed Omarchy v3.1.4 on MacBook 2019. I installed from ISO v3.1.4, there were some warnings during install (can't install act or similar) - but it did complete.

After rebooting, it flashes a couple of Hardware Errors (see attached photo), then shows the login screen for the password. Keyboard works, and get to the bar filling up. Then the screen goes blank, and after ~1 minute, the computer shuts down.

My system: Intel Mac i9, 32GB ram, 16’ 2019.
Kernel: 6.17.2-arch1-Watanare-T2-1-t2

[fair garden]

did you get this resolved? I'm having the same issue, same model.

Exact same error as well.

[austere night]

Same for me, if any of you figure it out, please let me know

[elder cave]

just managed to install Omarchy manually after a few days of trying.... same issue

[fair garden]

I have a feeling we need to apply this patch
https://github.com/t2linux/linux-t2-patches/blob/main/2009-apple-gmux-allow-switching-to-igpu-at-probe.patch

I think anyone without a discreet gpu is fine, but anyone with a discreet gpu will have the AMD as well as the Intel gpu. The intel GPU is the integrated and it should work fine.

I also see this, https://wiki.t2linux.org/guides/hybrid-graphics/ pretty sure either way its related to the hybrid graphics cards, that I assume we all have but I could be wrong.

[fair garden]

Yah that is more or less it. @half sun @austere night @elder cave if you have a Hybrid Graphics (2 GPUs intel integrated, and AMD discreet), you need to install the latest omarchy. Then add this.

https://wiki.t2linux.org/guides/hybrid-graphics/#enabling-the-igpu

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

options apple-gmux force_igd=y

What I did, was I booted back into the installer using the usb key, pressed esc a bunch of times.

sudo cryptsetup open /dev/nvme0n1p2 cryptroot
[enter your password]
sudo mount /dev/mapper/cryptroot /mnt

you should have access to /etc/modprobe.d/apple-gmux.conf but it will be in

cd /mnt/@/etc/modprobe.d/
touch apple-gmux.conf
nano apple-gmux.conf

add

options apple-gmux force_igd=y

write to file.
reboot

voila.

Should be the abrievated solution. My guess is the screen saver will have issues and goto a blackscreen. Wifi works. Haven't tested it much but booted 🙂

[fair garden]

You can get in but definitely still a lot of issues for me.

• pacman package database files are missing so you cant install things as expected.. had to

sudo pacman -Sy

• Screen saver when its turned on for a bit, the fans go on overdrive.
• Suspend screen breaks everything.
• Windowing seems broken.

[wary valley]

Thanks! I had the same issue last night installing - will try these later 🙂

[fair garden]

@wary valley I'm getting a new problem with the latest version where the installer just freezes now.. I think ideally before you do your first login attempt you want to add the apple-gmux.conf.

might avoid the need for the pacman cmd that way.. I have a feeling first login does something special but I maybe wrong. If you try to install something like cursor from the menu and it breaks then you know you need to do the pacman cmd.

[wary valley]

So I managed to do the install with the 3.1.8 ISO. But then I would get to the login screen, and shortly thereafter go blank and eventually reboot. What I did was at startup edit the t2 config and added the "nomodeset" to the command params. This allowed it to boot, where I could set the /etc/modprobe.d/apple-gmux.conf and I could start Omarchy.

Now having the next set of issues, which is waybar not showing 🙂

[fair garden]

Let me know how you make out. Probably give it another shot in a week. Keep me in the loop!

[wary valley]

So the issue with waybar was it was trying to use the amdgpu

When I disabled that, and it started using the integrated graphics the waybar showed up and everything was working

I also tried the USB-C => DisplayPort to drive an external display but this didn't work - unfortunately this is the deal breaker for me.

[fair garden]

@wary valley thx no surprise.. the hybrid is super problemtic. Did you disable it on boot? I bet you could figure out a way to make it work with a USB-C to HDMI adapter but you'd also need HDMI input.. and is it worth it? Not sure. For me I was just hoping to make the laptop tolerable for client visits when I'm out of the office.

[pale token]

I am struggling with the same thing, can you share specifically what you did to fix this?

[fair garden]

sudo tee /etc/modprobe.d/gpu-blacklist.conf << EOF
blacklist amdgpu
blacklist radeon
EOF

if you didnt add this yet..

sudo tee /etc/modprobe.d/apple-gmux.conf << EOF
options apple-gmux force_igd=y
EOF

sudo mkinitcpio -P
sudo reboot

seems to have made it not stable for me however..

[fair garden]

https://github.com/basecamp/omarchy/issues/1844 might interest you

[half sun]

Tbh I completely given up on this thread and omarchy after about two weeks. Just got back to trying to install omarchy again and saw all of these replies. Thanks for the suggestions everyone - I’ll try them out shortly and will report back 👍

[fair garden]

@half sun you get anywhere with this?