root@raspberrypi3-64:/lib/systemd/system# journalctl | grep wl
Feb 27 17:29:23 raspberrypi3-64 systemd[1]: Expecting device /sys/subsystem/net/devices/wlan0...
Feb 27 17:30:53 raspberrypi3-64 systemd[1]: sys-subsystem-net-devices-wlan0.device: Job sys-subsystem-net-devices-wlan0.device/start timed out.
Feb 27 17:30:53 raspberrypi3-64 systemd[1]: Timed out waiting for device /sys/subsystem/net/devices/wlan0.
Feb 27 17:30:53 raspberrypi3-64 systemd[1]: [email protected]: Job [email protected]/start failed with result 'dependency'.
Feb 27 17:30:53 raspberrypi3-64 systemd[1]: sys-subsystem-net-devices-wlan0.device: Job sys-subsystem-net-devices-wlan0.device/start failed with result 'timeout'.
Feb 27 17:58:28 raspberrypi3-64 systemd[1]: Unnecessary job was removed for /sys/subsystem/net/devices/wlan0.
Feb 27 17:58:29 raspberrypi3-64 wpa_supplicant[394]: Could not read interface wlan0 flags: No such device
Feb 27 17:58:29 raspberrypi3-64 wpa_supplicant[394]: nl80211: deinit ifname=wlan0 disabled_11b_rates=0
Feb 27 17:58:29 raspberrypi3-64 wpa_supplicant[394]: Could not read interface wlan0 flags: No such device
Feb 27 17:58:29 raspberrypi3-64 wpa_supplicant[394]: wlan0: Failed to initialize driver interface
Feb 27 17:58:29 raspberrypi3-64 wpa_supplicant[394]: wlan0: CTRL-EVENT-DSCP-POLICY clear_all
Feb 27 17:58:29 raspberrypi3-64 systemd[1]: [email protected]: Main process exited, code=exited, status=255/EXCEPTION
Feb 27 17:58:29 raspberrypi3-64 systemd[1]: [email protected]: Failed with result 'exit-code'.
Feb 27 18:02:47 raspberrypi3-64 systemd[1]: Unnecessary job was removed for /sys/subsystem/net/devices/wlan0.
Feb 27 18:02:47 raspberrypi3-64 wpa_supplicant[439]: Could not read interface wlan0 flags: No such device
Feb 27 18:02:47 raspberrypi3-64 wpa_supplicant[439]: nl80211: deinit ifname=wlan0 disabled_11b_rates=0
Feb 27 18:02:47 raspberrypi3-64 wpa_supplicant[439]: Could not read interface wlan0 flags: No such device
Feb 27 18:02:47 raspberrypi3-64 wpa_supplicant[439]: wlan0: Failed to initialize driver interface
Feb 27 18:02:47 raspberrypi3-64 wpa_supplicant[439]: wlan0: CTRL-EVENT-DSCP-POLICY clear_all
Feb 27 18:02:48 raspberrypi3-64 systemd[1]: [email protected]: Main process exited, code=exited, status=255/EXCEPTION
Feb 27 18:02:48 raspberrypi3-64 systemd[1]: [email protected]: Failed with result 'exit-code'.
root@raspberrypi3-64:/lib/systemd/system#