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once again thanks for great help!!
This has unfortunately not solved the issue. Still the driver was not loaded when booting. And I guess this is the real issue.
[ 5.372559] brcmfmac: F1 signature read @0x18000000=0x15264345
[ 5.390612] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43455-sdio for chip BCM4345/6
[ 5.391647] usbcore: registered new interface driver brcmfmac
Therefore I searached the web a bit and tried following to understand if the driver is supported already. And yes it is:
pi@m2pPi4:~ $ modprobe -c | grep -i „7392.*7822“
alias usb:v7392p7822d*dc*dsc*dp*ic*isc*ip*in* rtl8192cu
I loaded the driver manually
pi@m2pPi4:~ $ sudo modprobe rtl8192cu
Now it also shows up at loaded modules
pi@m2pPi4:~ $ lsmod
Module Size Used by
rtl8192cu 86016 0
rtl_usb 20480 1 rtl8192cu
rtl8192c_common 65536 1 rtl8192cu
rtlwifi 114688 3 rtl_usb,rtl8192c_common,rtl8192cu
mac80211 802816 3 rtl_usb,rtlwifi,rtl8192cu
And it seems well connected, WiFi Stick has Blue LED on and I can access via WiFi with remote console! Great!
[ 215.944073] rtl8192cu: Chip version 0x11
[ 216.021062] rtl8192cu: Board Type 0
[ 216.021248] rtl_usb: rx_max_size 15360, rx_urb_num 8, in_ep 1
[ 216.021303] rtl8192cu: Loading firmware rtlwifi/rtl8192cufw_TMSC.bin
[ 216.021534] ieee80211 phy1: Selected rate control algorithm ‚rtl_rc‘
[ 216.030062] usbcore: registered new interface driver rtl8192cu
[ 216.260990] rtl8192cu: MAC auto ON okay!
[ 216.289774] rtl8192cu: Tx queue select: 0x05
[ 218.137860] wlan0: authenticate with 84:d8:1b:8c:97:0c
[ 218.160930] wlan0: send auth to 84:d8:1b:8c:97:0c (try 1/3)
[ 218.185617] wlan0: authenticated
[ 218.195944] wlan0: associate with 84:d8:1b:8c:97:0c (try 1/3)
[ 218.235049] wlan0: RX AssocResp from 84:d8:1b:8c:97:0c (capab=0x1431 status=0 aid=5)
[ 218.338625] wlan0: associated
But the question is now: how to make sure that it also is done automatically while normal boot?
Any hint would really be appreciated!
Thanks a lot,