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NixOS on ARM/Raspberry Pi: Difference between revisions

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Left a comment about the bootmanager depreaction.
Tennox (talk | contribs)
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Add Raspberry Pi 5 to tables (it's already described below)
 
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|-
|-
!colspan="2" class="title"|Raspberry Pi 4
!colspan="2" class="title"|Raspberry Pi 4
|-
!Architecture
|AArch64 + ARMv7
|-
! colspan="2" |Raspberry Pi 5
|-
|-
!Architecture
!Architecture
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| Raspberry Pi 4 Model B
| Raspberry Pi 4 Model B
| AArch64<br /> ''+ armv7''
| AArch64<br /> ''+ armv7''
| YES* ([https://github.com/NixOS/nixpkgs/issues/63720 GitHub issue])
| YES
|-
!colspan="3" style="text-align: left;"|Raspberry Pi 400
|-
| Raspberry Pi 400
| AArch64<br /> ''+ armv7''
| Yes (only with kernel >= 6.1)
|-
! colspan="3" |Raspberry Pi 5
|-
|Raspberry Pi 5
|AArch64<br /> ''+ armv7''
|C*
|}
|}


''Support''
''Support''
* YES: Supported architecture by Nixpkgs downstream and tested to be working.
* YES: Supported architecture by Nixpkgs downstream and tested to be working.
* YES*: Available in Nixpkgs downstream but experimental.
* C: Community supported, and tested to be working.
* C: Community supported, and tested to be working.
* C*: Community supported, unverified but should be working.
* C*: Community supported, unverified but should be working.
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</syntaxHighlight>
</syntaxHighlight>


=== Raspberry Pi 4B ===
=== Raspberry Pi 4 ===
Support for the Pi 4 in nixpkgs is still experimental. These configurations will boot (from [https://github.com/NixOS/nixpkgs/pull/68265#issuecomment-532040372 this PR comment]):
''See'' [[NixOS on ARM/Raspberry Pi 4]]


==== Without GPU ====
=== Raspberry Pi 5===
{{file|/etc/nixos/configuration.nix|nix|<nowiki>
''See'' [[NixOS on ARM/Raspberry Pi 5]]
{ pkgs, ... }:
 
{
  imports = [ </nowiki><nixpkgs/nixos/modules/installer/cd-dvd/sd-image-raspberrypi4.nix><nowiki> ];
 
  networking.wireless.enable = false;
  services.xserver = {
    enable = true;
    displayManager.slim.enable = true;
    desktopManager.gnome3.enable = true;
    videoDrivers = [ "fbdev" ];
  };
}
</nowiki>}}
 
==== With GPU ====
{{file|/etc/nixos/configuration.nix|nix|<nowiki>
{ pkgs, ... }:
 
{
  imports = [ </nowiki><nixpkgs/nixos/modules/installer/cd-dvd/sd-image-raspberrypi4.nix><nowiki> ];
 
  networking.wireless.enable = false;
  hardware.opengl = {
    enable = true;
    setLdLibraryPath = true;
    package = pkgs.mesa_drivers;
  };
  hardware.deviceTree = {
    base = pkgs.device-tree_rpi;
    overlays = [ "${pkgs.device-tree_rpi.overlays}/vc4-fkms-v3d.dtbo" ];
  };
  services.xserver = {
    enable = true;
    displayManager.slim.enable = true;
    desktopManager.gnome3.enable = true;
    videoDrivers = [ "modesetting" ];
  };
 
  boot.loader.raspberryPi.firmwareConfig = ''
    gpu_mem=192
  '';
}
</nowiki>}}


==== Audio ====
== Audio ==


In addition to the usual config, it might be required to enable audio support explicitly in the firmwareConfig.
In addition to the usual config, it might be required to enable audio support explicitly in the firmwareConfig.
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=== Power issues ===
=== Power issues ===


Especially with the power-hungry Raspberry Pi 3, it is important to have a [https://www.raspberrypi.org/documentation/hardware/raspberrypi/power/README.md sufficient enough power supply] or ''weirdness'' may happen. Weirdness may include:
Especially with the power-hungry Raspberry Pi 3, it is important to have a [https://www.raspberrypi.org/documentation/hardware/raspberrypi/power/README.md sufficient enough power supply] or unexpected behaviour may occur; this may include:


* Lightning bolt on HDMI output "breaking" the display.
* Lightning bolt on HDMI output "breaking" the display.
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* Random hangs
* Random hangs


This problem is a hard problem. It is caused by the Raspberry Pi warning about power issues, but the current drivers (as of  
This is a hard problem. It is caused by the Raspberry Pi warning about power issues, but the current drivers (as of  
Linux 4.14) have a hard time dealing with it properly. If the power supply is rated properly AND the cable is not incurring too much power losses, it may be required to disable the lightning bolt indicator so the display driver isn't messed up.<ref>https://logs.nix.samueldr.com/nixos/2017-12-20#1513784657-1513784714;</ref> The lightning bolt indicator can be disabled by adding the line <code>avoid_warnings=1</code> in config.txt<ref>https://www.raspberrypi.org/documentation/configuration/config-txt/README.md</ref>
Linux 4.14) have a hard time dealing with it properly. If the power supply is rated properly AND the cable is not incurring too much power losses, it may be required to disable the lightning bolt indicator so the display driver isn't messed up.<ref>https://logs.nix.samueldr.com/nixos/2017-12-20#1513784657-1513784714;</ref> The lightning bolt indicator can be disabled by adding the line <code>avoid_warnings=1</code> in config.txt<ref>https://www.raspberrypi.org/documentation/configuration/config-txt/README.md</ref>


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