I have recently noticed that in about 10% of the times I’m booting OpenWRT, the WiFi radios fail to start up with the retry_setup_failed
flag set to true
. Rebooting fixes the issue in most cases, but not always (I assume it’s just throwing the dice again). I have failed to find any information/documentation on what causes the retry_setup_failed
flag to be set. Could someone enlighten me on what the flag signifies and maybe also how I might work around the problem other than continuously rebooting the device until the flag isn’t set?
Configuration
I’m using OpenWrt 19.07.2 r10947-65030d81f3
on the following devices:
- D-Link Dir 825 C1
- TP-Link Archer C5 v1.2
- TP-Link Archer C7 v2
- TP-Link Archer C7 v5
- TP-Link TL-WDR4900
The issue is not specific to any specific device. There also doesn’t seem to be a pattern which radio fails to start up.
When the error occurs, `wifi status` outputs the following on a D-Link Dir 825 C1
<...>
entries have been retracted.
{
"radio0": {
"up": false,
"pending": false,
"autostart": true,
"disabled": false,
"retry_setup_failed": true,
"config": {
"path": "pci0000:00/0000:00:00.0",
"hwmode": "11a",
"htmode": "HT40",
"country": "DE"
},
"interfaces": [
{
"section": "wifi_5ghz",
"config": {
"ifname": "wifi_5ghz",
"mode": "ap",
"ssid": "mywifi",
"encryption": "wpa2+ccmp",
"auth_server": "<...>",
"auth_secret": "<...>",
"network": [
"lan"
],
"mode": "ap"
}
},
{
"section": "legacy_5ghz",
"config": {
"ifname": "legacy_5ghz",
"mode": "ap",
"ssid": "mywifi_legacy",
"encryption": "psk2+ccmp",
"key": "<...>",
"macfilter": "allow",
"maclist": [
"<...>"
],
"network": [
"lan"
],
"mode": "ap"
}
}
]
},
"radio1": {
"up": true,
"pending": false,
"autostart": true,
"disabled": false,
"retry_setup_failed": false,
"config": {
"path": "platform/ahb/18100000.wmac",
"hwmode": "11g",
"htmode": "HT20",
"country": "DE"
},
"interfaces": [
{
"section": "wifi_24ghz",
"ifname": "wifi_24ghz",
"config": {
"ifname": "wifi_24ghz",
"mode": "ap",
"ssid": "mywifi",
"encryption": "wpa2+ccmp",
"auth_server": "<...>",
"auth_secret": "<...>",
"network": [
"lan"
],
"mode": "ap"
}
},
{
"section": "legacy_24ghz",
"ifname": "legacy_24ghz",
"config": {
"ifname": "legacy_24ghz",
"mode": "ap",
"ssid": "mywifi_legacy",
"encryption": "psk2+ccmp",
"key": "<...>",
"macfilter": "allow",
"maclist": [
"<...>"
],
"network": [
"lan"
],
"mode": "ap"
}
}
]
}
}
The Wi-Fi config of a D-Link Dir 825 C1 looks as follows (the other devices are analogous)
config wifi-device 'radio0'
option type 'mac80211'
option path 'pci0000:00/0000:00:00.0'
option hwmode '11a'
option htmode 'HT40'
option country 'DE'
config wifi-iface 'wifi_5ghz'
option ifname 'wifi_5ghz'
option device 'radio0'
option network 'lan'
option mode 'ap'
option ssid 'mywifi'
option encryption 'wpa2+ccmp'
option auth_server '<...>'
option auth_secret '<...>'
config wifi-iface 'legacy_5ghz'
option ifname 'legacy_5ghz'
option device 'radio0'
option network 'lan'
option mode 'ap'
option ssid 'mywifi_legacy'
option encryption 'psk2+ccmp'
option key '<...>'
option macfilter 'allow'
option maclist '<...>'
config wifi-device 'radio1'
option type 'mac80211'
option path 'platform/ahb/18100000.wmac'
option hwmode '11g'
option htmode 'HT20'
option country 'DE'
config wifi-iface 'wifi_24ghz'
option ifname 'wifi_24ghz'
option device 'radio1'
option network 'lan'
option mode 'ap'
option ssid 'mywifi'
option encryption 'wpa2+ccmp'
option auth_server '<...>'
option auth_secret '<...>'
config wifi-iface 'legacy_24ghz'
option ifname 'legacy_24ghz'
option device 'radio1'
option network 'lan'
option mode 'ap'
option ssid 'mywifi_legacy'
option encryption 'psk2+ccmp'
option key '<...>'
option macfilter 'allow'
option maclist '<...>'