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apple/macbook-pro/11-5: driver choice should be optional since si_support is experimental

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This commit is contained in:
Rehno Lindeque 2022-09-07 16:53:00 +00:00
parent fd68d65507
commit a4345da27e
2 changed files with 19 additions and 8 deletions
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23
apple/macbook-pro/11-5/README.md
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@ -24,19 +24,34 @@ This configuration will **not** work with MacBook Pro 11,2 or 11,3 models.
The [MacBookPro11,4 and MacBookPro11,5](https://support.apple.com/kb/SP719) models ship with a discrete ATI/AMD graphics card (whereas MacBookPro11,2 and MacBookPro11,3 ship with NVidia cards). This is alongside the usual integrated Intel GPU.
You may wish to look into dynamic switching between integrated and discrete graphics, but this config doesn't attempt it.
To switch from the older `radeon` driver to the newer `amdgpu` driver (via experimental `si_support`), include `nixos-hardware.nixosModules.common-gpu-amd-southern-islands` (or `${nixos-hardware}/common/gpu/amd/southern-islands`) in your configuration. This will get you vulkan support among other benefits.
Currently this uses the experimental `si_support` to disable the older radeon driver and enable the more modern `amdgpu` driver.
For example, in your `flake.nix`:
```nix
nixosConfigurations = {
macbook-pro-11-5 = lib.nixosSystem {
system = "x86_64-linux";
modules = [
nixos-hardware.nixosModules.apple-macbook-pro-11-5
nixos-hardware.nixosModules.common-gpu-amd-southern-islands
{
# Your personal configuration
}
];
};
};
```
## Hardware probes
Hardware probes generated with `nix run nixpkgs#hw-probe -- -all -upload`:
* Probe [#305905e674](https://linux-hardware.org/?probe=305905e674) of Apple MacBookPro11,5
* Probe [#305905e674](https://linux-hardware.org/?probe=305905e674) of Apple MacBookPro11,5 (with `amdgpu` driver)
DRM (Direct Rendering Manager) snapshots generated with `drm_info -j | curl -d @- https://drmdb.emersion.fr/submit`:
* Snapshot [#e8f8076f1f1b](https://drmdb.emersion.fr/snapshots/e8f8076f1f1b)
* Snapshot [#e8f8076f1f1b](https://drmdb.emersion.fr/snapshots/e8f8076f1f1b) (with `amdgpu` driver)
## Additional resources

4
apple/macbook-pro/11-5/default.nix
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@ -10,10 +10,6 @@ in
imports = [
../.
../../../common/pc/laptop/ssd
# Radeon Venus XT is a GCN 1 microarchitecture
# (amdgpu driver support is experimental and must be explicitly enabled)
../../../common/gpu/amd/southern-islands
];
# Enable broadcom-43xx firmware