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NixOS on ARM/Raspberry Pi: Difference between revisions

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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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| AArch64<br /> ''+ armv7''
| AArch64<br /> ''+ armv7''
| Yes (only with kernel >= 6.1)  
| Yes (only with kernel >= 6.1)  
|-
! colspan="3" |Raspberry Pi 5
|-
|Raspberry Pi 5
|AArch64<br /> ''+ armv7''
|C*
|}
|}


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''See'' [[NixOS on ARM/Raspberry Pi 5]]
''See'' [[NixOS on ARM/Raspberry Pi 5]]


=== 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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