IssueTracker

I have the same issue. If I come back home with WiFi on the pgonencan detect my network but won't connect.disabling and re enabling WiFi fixes the issue.

This is reported in many fora as the biggest nexus 5 problem. I suggest raising the priority

I have the same problem
It seems that a connection to wifi is only possible when there is no LTE/3G connection. either after reboot before entering pin or in flight mode

successful connect after reboot:
I/wpa_supplicant(  856): wlan0: Trying to associate with xx:xx:xx:xx:xx:xx (SSID='xxx' freq=2447 MHz)
I/wpa_supplicant(  856): wlan0: Associated with xx:xx:xx:xx:xx:xx
I/wpa_supplicant(  856): wlan0: WPA: Key negotiation completed with xx:xx:xx:xx:xx:xx  [PTK=CCMP GTK=TKIP]
I/wpa_supplicant(  856): wlan0: CTRL-EVENT-CONNECTED - Connection to xx:xx:xx:xx:xx:xx  completed (auth) [id=12 id_str=]

unsuccessful attempt:
I/wpa_supplicant(  847): wlan0: CTRL-EVENT-SSID-REENABLED id=12 ssid="xxx"
I/wpa_supplicant(  847): wlan0: Trying to associate with xx:xx:xx:xx:xx:xx (SSID='xxx' freq=2447 MHz)
D/CommandListener(  177): Clearing all IP addresses on wlan0
I/wpa_supplicant(  847): wlan0: Authentication with xx:xx:xx:xx:xx:xx timed out.
I/wpa_supplicant(  847): wlan0: CTRL-EVENT-DISCONNECTED bssid=xx:xx:xx:xx:xx:xx reason=3 locally_generated=1
I/wpa_supplicant(  847): wlan0: CTRL-EVENT-SSID-TEMP-DISABLED id=12 ssid="xxx" auth_failures=1 duration=10
I/wpa_supplicant(  847): wlan0: CTRL-EVENT-ASSOC-REJECT status_code=1
E/wpa_supplicant(  847): current_ssid == NULL