With arch arm on pi4 wifi doesn't work out of the box with latest kernel and firmware from today. Dmesg shows this error: brcmfmac: brcmf_sdio_htclk: HT Avail timeout (1000000): clkctl 0x50 After copying wifi driver brcmfmac43455* from https://github.com/RPi-Distro/firmware-nonfree/tree/master/brcm ...