After Proxmox Virtual Environment 8.1.3+pve1 installation on Raspberry Pi5 you may face the wlan0 wifi interface missing. It's really frustrating!
Here I will describe the way to quickly fix this issue.
Validated on "Debian GNU/Linux 12 (bookworm)" with Raspberry Pi5.
After Proxmox installation and raspberry pi5 reboot, the wlan0 interface missed.
1. Cloning wifi firmware repository
2. The wifi mode for raspberry pi 5 is brcmfmc43455, you only need to copy the files for brcmfmc43455.
3. Create symlinks for the firmware files, make sure you have following symlinks.
4. Reboot your system
5. Now, you can validate the wlan0 back to work.
Have Fun!
Here I will describe the way to quickly fix this issue.
Validated on "Debian GNU/Linux 12 (bookworm)" with Raspberry Pi5.
After Proxmox installation and raspberry pi5 reboot, the wlan0 interface missed.
| iwlist wlan0 scan wlan0 Interface doesn't support scanning. |
| dmesg | grep brcmfmac [ 5.126350] brcmfmac: F1 signature read @0x18000000=0x15264345 [ 5.134616] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43455-sdio for chip BCM4345/6 [ 5.134895] brcmfmac mmc1:0001:1: Direct firmware load for brcm/brcmfmac43455-sdio.raspberrypi,5-model-b.bin failed with error -2 [ 5.134948] usbcore: registered new interface driver brcmfmac [ 5.135002] brcmfmac mmc1:0001:1: Direct firmware load for brcm/brcmfmac43455-sdio.bin failed with error -2 [ 6.144231] brcmfmac: brcmf_sdio_htclk: HT Avail timeout (1000000): clkctl 0x50 |
1. Cloning wifi firmware repository
| git clone --depth=1 https://github.com/RPi-Distro/firmware-nonfree.git |
2. The wifi mode for raspberry pi 5 is brcmfmc43455, you only need to copy the files for brcmfmc43455.
| cp firmware-nonfree/debian/config/brcm80211/cypress/cyfmac43455-sdio-standard.bin /lib/firmware/brcm/brcmfmac43455-sdio.bin cp firmware-nonfree/debian/config/brcm80211/cypress/cyfmac43455-sdio.clm_blob /lib/firmware/brcm/brcmfmac43455-sdio.clm_blob cp firmware-nonfree/debian/config/brcm80211/brcm/brcmfmac43455-sdio.txt /lib/firmware/brcm/ |
3. Create symlinks for the firmware files, make sure you have following symlinks.
| ln -s /lib/firmware/brcm/brcmfmac43455-sdio.raspberrypi,5-model-b.bin /lib/firmware/brcm/brcmfmac43455-sdio.bin ln -s /lib/firmware/brcm/brcmfmac43455-sdio.raspberrypi,5-model-b.clm_blob /lib/firmware/brcm/brcmfmac43455-sdio.raspberrypi,5-model-b.bin ln -s /lib/firmware/brcm/brcmfmac43455-sdio.txt /lib/firmware/brcm/brcmfmac43455-sdio.raspberrypi,5-model-b.txt |
4. Reboot your system
| reboot |
5. Now, you can validate the wlan0 back to work.
| rfkill ID TYPE DEVICE SOFT HARD 0 bluetooth hci0 unblocked unblocked 1 wlan phy0 unblocked unblocked |
| iwlist wlan0 scan |
Have Fun!