Raspberry Pi 4 WiFi (wlan0) interfaces won't show up

[ofirc]

Hi, I recently purchased a "CanaKit Raspberry Pi 4 4GB Starter Kit - 4GB RAM" and my WiFi (wlan0 interface) won't show up.

I'm using Raspbian GNU/Linux 10 (buster) with the following kernel: Linux raspberrypi 4.19.97-v7l+ #1294 SMP Thu Jan 30 13:21:14 GMT 2020 armv7l GNU/Linux

I started with NOOBS and the Raspbian, then tried to move to a newer OS using the Raspberry Pi Imager, but there is no wlan0 interface showing in ifconfig: `pi@raspberrypi:~ $ ifconfig eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 10.100.102.10 netmask 255.255.255.0 broadcast 10.100.102.255 inet6 fe80::9c73:5c79:caa4:1824 prefixlen 64 scopeid 0x20 ether dc:a6:32:23:e1:97 txqueuelen 1000 (Ethernet) RX packets 234 bytes 29425 (28.7 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 181 bytes 29795 (29.0 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536 inet 127.0.0.1 netmask 255.0.0.0 inet6 ::1 prefixlen 128 scopeid 0x10 loop txqueuelen 1000 (Local Loopback) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

pi@raspberrypi:~ $`

These are the messages from dmesg after plain reboot: pi@raspberrypi:~ $ dmesg | grep brcm [ 0.272456] brcm-pcie fd500000.pcie: dmabounce: initialised - 32768 kB, threshold 0x00000000c0000000 [ 0.272478] brcm-pcie fd500000.pcie: could not get clock [ 0.272541] brcm-pcie fd500000.pcie: host bridge /scb/pcie@7d500000 ranges: [ 0.272579] brcm-pcie fd500000.pcie: MEM 0x600000000..0x603ffffff -> 0xf8000000 [ 0.338740] brcm-pcie fd500000.pcie: link up, 5.0 Gbps x1 (!SSC) [ 0.339014] brcm-pcie fd500000.pcie: PCI host bridge to bus 0000:00 [ 0.473239] brcmstb_thermal fd5d2200.thermal: registered AVS TMON of-sensor driver [ 3.829136] brcmfmac: F1 signature read @0x18000000=0x15264345 [ 3.841332] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43455-sdio for chip BCM4345/6 [ 3.841829] usbcore: registered new interface driver brcmfmac [ 4.094279] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43455-sdio for chip BCM4345/6 [ 4.112275] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM4345/6 wl0: Mar 2 2020 23:30:41 version 7.45.202 (r724630 CY) FWID 01-72f6ece2 [ 4.249668] brcmfmac: power management disabled pi@raspberrypi:~ $`

Any idea?

Thanks, Ofir

[jensstark]

Enter

lsmod

Do you see loaded modules? If not:

Get kernel version using

uname -a

then look for a matching directory in /lib/modules (using ls)

ls /lib/modules

If there are no modules loaded, you probably have a wrong kernel version.

[pelwell]

You can combine that into a single command (and save typing) with:

ls /lib/modules/`uname -r`

Watch out for the backticks - ` - they aren't apostrophes - '.

[geargoose]

I've got the same issue.