[OpenWrt-Devel] Mikrotik RB951Ui-2HnD: Wireless config missing on new hardware

[Nishant Sharma]

Hello,

[Unable to post on forum (error 502 bad gateway), hence posting here.]

It seems something has changed in the hardware. I have "Type: INTL"
devices here.

I have already tried the following firmwares:

1. custom compiled 19.07.0
2. openwrt 19.07.0
3. custom compiled 18.06.2
4. custom compiled 17.02.4

I have tried these firmware on multiple (5+) old and new devices.

On newer hardware, wifi config only touches the /etc/config/wireless and
there is no configuration inside.

Below is the output on older hardware with 17.02.4, which has wifi working:

```
root at HBCC2DE061D01A:~# iw dev wlan0 info
Interface wlan0
        ifindex 6
        wdev 0x1
        addr cc:2d:e0:61:d0:25
        type managed
        wiphy 0
        txpower 20.00 dBm

root at HBCC2DE061D01A:~# dmesg | grep ath
[   22.885162] ath: EEPROM regdomain: 0x0
[   22.885182] ath: EEPROM indicates default country code should be used
[   22.885191] ath: doing EEPROM country->regdmn map search
[   22.885212] ath: country maps to regdmn code: 0x3a
[   22.885224] ath: Country alpha2 being used: US
[   22.885233] ath: Regpair used: 0x3a

root at HBCC2DE061D01A:/sys/devices/platform# ls -1
ag71xx-mdio.1
ag71xx.0
ag71xx.1
alarmtimer
ar934x-nfc
ar934x_wmac
ath79-gpio
ath79-wdt
ehci-platform
leds-gpio
regulatory.0
serial8250
serial8250.0
uevent

```

And below is the output on new hardware with 17.02.4:

```
root at OpenWrt:~# iw dev wlan0 info
command failed: No such device (-19)

root at OpenWrt:~# dmesg | grep ath
root at OpenWrt:~#

root at OpenWrt:/sys/devices/platform# ls -1
ag71xx-mdio.1
ag71xx.0
ag71xx.1
alarmtimer
ar934x-nfc
ath79-gpio
ath79-wdt
ehci-platform
leds-gpio
regulatory.0
serial8250
serial8250.0
uevent

```

Unloading or loading ath9k module adds following line to dmesg:

```
root at OpenWrt:~# dmesg | grep ath
[ 1175.108742] ath9k: ath9k: Driver unloaded

```

The above behaviour is same with 19.07.0 on the new hardware.

I do not see ar934x_wmac in /sys/devices/platform on new hardware, but
it is present on older hardware.

Does anyone has a clue about what could be going on?

I have access to both the types of numerous devices, so I can provide
further debugging information as and when required.

Thanks in advance.

Regards,
Nishant

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