I was having the same issue with my WiFi USB dongle and was able to fix it, so I'll just add it here if it helps someone. I am using LE 13 for RK3566 (I have a Quartz64 Model A)
chewitt thanks for the instructions on how to see the log. I was able to do it and found this:
Code
[ 11.871724] rtw88_8821au 3-1:1.0: Direct firmware load for rtw88/rtw8821a_fw.bin failed with error -2
[ 11.871760] rtw88_8821au 3-1:1.0: failed to request firmware
[ 11.962647] rtw88_8821au 3-1:1.0: failed to load firmware
[ 11.962671] rtw88_8821au 3-1:1.0: failed to setup chip efuse info
[ 11.962676] rtw88_8821au 3-1:1.0: failed to setup chip information
[ 11.962854] rtw88_8821au 3-1:1.0: probe with driver rtw88_8821au failed with error -22
[ 11.962982] usbcore: registered new interface driver rtw88_8821auAs you said, the firmware file rtw88/rtw8821a_fw.bin was missing, so I just downloaded it from here and then I inserted the file in this location: /storage/.config/firmware/rtw88/rtw8821a_fw.bin.
In my case the firmware folder didn't exist so I had to create it. And after rebooting, voilà! Now my dongle works as expected.