me like nix
Fix Pi WiFi power save and persist logs
author
Sean Aye
date
(Jun 2, 2026, 9:26 PM -0400)
commit
dc5f02d0
dc5f02d08e1633fe201788b0febebfd85ade885d
parent
dd8daddd
dd8dadddb71862eed6ece5455ec6ee3023c6e095
change-id
spkuxwsq
spkuxwsqorsmlswukwumsuymltkxvvyk
+18
-4
+3
-2
modules/pi-stability.nix
+3
-2
modules/pi-stability.nix
···
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rebootTime = "60s";
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};
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-
# Reduce SD card writes - logs to tmpfs
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# Persist logs so failures can be diagnosed after reboot.
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services.journald.extraConfig = ''
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-
Storage=volatile
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Storage=persistent
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SystemMaxUse=256M
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RuntimeMaxUse=64M
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'';
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+15
-2
modules/pi-wifi.nix
+15
-2
modules/pi-wifi.nix
···
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systemd.services.wifi-powersave-off = {
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description = "Disable WiFi power save";
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-
after = [ "network.target" ];
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after = [ "wpa_supplicant.service" "network.target" ];
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wants = [ "wpa_supplicant.service" ];
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wantedBy = [ "multi-user.target" ];
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serviceConfig = {
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Type = "oneshot";
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-
ExecStart = "${pkgs.iw}/bin/iw dev wlan0 set power_save off";
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ExecStart = pkgs.writeShellScript "wifi-powersave-off" ''
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set -eu
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+
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for _ in $(seq 1 60); do
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if ${pkgs.iw}/bin/iw dev wlan0 set power_save off; then
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exit 0
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fi
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sleep 1
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done
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+
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echo "failed to disable WiFi power save: wlan0 did not become ready" >&2
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exit 1
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'';
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RemainAfterExit = true;
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};
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};