[SOLVED?]RTL8812AU (0bda:881a) driver loads but no interface on Firefly rk3328 (6.6.110), dmesg: "rfe 2 not supported"

Hello OpenWrt Community

I am having trouble getting my Realtek RTL8812AU USB Wi-Fi adapter (ID 0bda:881a) to work properly on my OpenWrt system. The driver modules appear to be loaded, but no wireless interface (like wlan0) is created.The device is unusable.
My system details are as follows:

Model:Firefly roc-rk3328-cc
Architecture: ARMv8 Processor rev 4
Target Platform:rockchip/armv8
Firmware Version: OpenWrt 24.10.4 r28959-29397011cc / LuCI openwrt-24.10 branch 25.313.53093~ae2aec8
Kernel Version: 6.6.110

The rtw88_8812audriver and its dependencies are loaded.

root@OpenWrt:~# lsmod | grep 8812
compat                 12288  6 rtw88_8812au,ath9k_htc,ath9k_common,rt2800usb,mac80211,cfg80211
rtw88_8812a            40960  1 rtw88_8812au
rtw88_8812au           12288  0
rtw88_88xxa            28672  1 rtw88_8812a
rtw88_core            131072  3 rtw88_8812a,rtw88_88xxa,rtw88_usb
rtw88_usb              16384  1 rtw88_8812au

The logs show initial driver messages

[  556.474672] rtw_8812au 4-1.1:1.0: Firmware version 52.14.0, H2C version 0
[  556.711587] rtw_8812au 4-1.1:1.0: rfe 2 isn't supported
[  556.718447] rtw_8812au 4-1.1:1.0: failed to setup chip efuse info
[  556.719021] rtw_8812au 4-1.1:1.0: failed to setup chip information
[  556.720177] usbcore: registered new interface driver rtw_8812au

I can't understand what the logs said.And i 'm so sad.

I have tested this wireless card on my Arch Linux, and it works properly,both 2.4G and 5G.
It might just be insufficient power supply.

Try the RC2 -https://github.com/morrownr/USB-WiFi/blob/main/home/USB_WiFi_Chipsets.md.

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