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Add way to get wifi on the live iso in case of T2 Macs #97

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Feb 23, 2025
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Add way to get wifi on the live iso in case of T2 Macs #97

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35 changes: 32 additions & 3 deletions src/content/docs/installation/installation_t2macbook.mdx
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Original file line number Diff line number Diff line change
Expand Up @@ -12,8 +12,37 @@ import { Tabs, TabItem, Steps } from '@astrojs/starlight/components';
CachyOS provides out of the box support for the T2 MacBook. The required kernel patches are shipped in all the kernels provided by CachyOS.

**WiFi connection** is **not available** out of the box because it is a closed source firmware, which CachyOS is not allowed to redistribute.
The installation will only work with a LAN connection. WiFi support can be set-up after the installation.
See [installation of the firmware](#installation-of-the-firmware)
The installation needs internet to proceed, so either use a LAN network, or follow [this section](#getting-wifi-firmware-for-the-installation) to get WiFi firmware.

### Getting WiFi firmware for the installation

<Steps>

1. First boot into macOS and run this command:
```sh
curl -sL https://wiki.t2linux.org/tools/firmware.sh | bash -s copy_to_efi
```

2. Now boot into the CachyOS ISO. Open Konsole there, and run these commands:
```sh
sudo mkdir -p /tmp/apple-wifi-efi
sudo mount /dev/nvme0n1p1 /tmp/apple-wifi-efi
bash /tmp/apple-wifi-efi/firmware.sh get_from_efi
sudo umount /tmp/apple-wifi-efi
```

3. Setup `iwd` as backend for NetworkManager. You can run the following commands in Konsole to do so:
```sh
cat <<EOF | sudo tee /etc/NetworkManager/conf.d/wifi_backend.conf
[device]
wifi.backend=iwd
EOF
sudo systemctl restart NetworkManager
```

</Steps>

Now you can connect to a WiFi network and proceed with the installation.

### Proceeding with Installation

Expand Down Expand Up @@ -68,4 +97,4 @@ sudo modprobe -r brcmfmac
sudo modprobe brcmfmac
```

The firmware can also be extracted from an ISPW file, see the [t2linux wiki page](https://wiki.t2linux.org/guides/wifi-bluetooth/)
For more ways to get the firmware, see the [t2linux wiki page](https://wiki.t2linux.org/guides/wifi-bluetooth/)