38 lines
891 B
Bash
Executable file
38 lines
891 B
Bash
Executable file
#!/bin/bash
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# Probe what actually matters (DNS to a real target) and escalate recovery
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# steps until something works. `ip link down/up` alone can't unwedge the
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# brcmfmac chip on the Pi Zero 2W.
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CONNECTION="netplan-wlan0-HiddenPlace"
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PROBE_HOST="homeassistant.schmelczer.dev"
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probe() {
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ping -c 1 -W 5 192.168.0.1 >/dev/null 2>&1 \
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&& getent hosts "$PROBE_HOST" >/dev/null 2>&1
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}
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probe && exit 0
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logger "wifi-check: probe failed, reconnecting via nmcli"
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nmcli device disconnect wlan0
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sleep 2
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nmcli connection up "$CONNECTION"
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sleep 10
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probe && exit 0
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logger "wifi-check: nmcli failed, cycling rfkill"
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rfkill block wifi
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sleep 3
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rfkill unblock wifi
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sleep 15
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probe && exit 0
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logger "wifi-check: rfkill failed, reloading brcmfmac"
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modprobe -r brcmfmac brcmutil
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sleep 3
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modprobe brcmfmac
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sleep 20
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probe && exit 0
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logger "wifi-check: all recovery failed, rebooting"
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/sbin/reboot
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