Comment 6 for bug 1862760

I flashed the focal preinstalled image for arm64 and put in an RPi4. I then did a dist-upgrade, setup a netplan config, rebooted (an undocumented step?) and I am not able to connect to the access point. I confirmed that the right firmware is being used:

[ 9.005150] brcmfmac: F1 signature read @0x18000000=0x15264345
[ 9.014444] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43455-sdio for chip BCM4345/6
[ 9.025103] usbcore: registered new interface driver brcmfmac
[ 9.280853] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43455-sdio for chip BCM4345/6
[ 9.301187] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM4345/6 wl0: Feb 27 2018 03:15:32 version 7.45.154 (r684107 CY) FWID 01-4fbe0b04
[ 10.310028] brcmfmac: power management disabled

I found this in my journal:

Feb 19 19:28:14 ubuntu wpa_supplicant[1620]: wlan0: Failed to initiate sched scan
Feb 19 19:28:22 ubuntu wpa_supplicant[1620]: wlan0: Failed to initiate sched scan
Feb 19 19:28:29 ubuntu wpa_supplicant[1620]: wlan0: Failed to initiate sched scan
Feb 19 19:28:37 ubuntu wpa_supplicant[1620]: wlan0: Failed to initiate sched scan
Feb 19 19:28:44 ubuntu wpa_supplicant[1620]: wlan0: Failed to initiate sched scan
Feb 19 19:28:52 ubuntu wpa_supplicant[1620]: wlan0: Failed to initiate sched scan
Feb 19 19:29:00 ubuntu wpa_supplicant[1620]: wlan0: Failed to initiate sched scan
Feb 19 19:29:07 ubuntu wpa_supplicant[1620]: wlan0: Failed to initiate sched scan

Perhaps we should test this on 19.10.1 so we aren't adding the additional variable of running Focal.