Goes to sleep, and when it wakes up, wifi has "forgotten" all the network settings.
all saved passwords, etc ... gone. It's like you did a data wipe on WiFi.
However ... if you view the wpa_supplicant.conf file, everything's still there.
Turning wifi off, and back on ... no effect.
But ... if you reboot, wifi connects right up .... yep, that's right - no changes whatsoever ... just reboot.
Anyone got any ideas or seen anything similar?