Differences

This shows you the differences between two versions of the page.

--- doc:appunti:hardware:raspberrypi_wpa_supplicant_problem [2018/02/17 10:06] – created niccolo
+++ doc:appunti:hardware:raspberrypi_wpa_supplicant_problem [2020/08/14 10:17] (current) – niccolo
@@ Line 1: / Line 1: @@
-====== Rapsberry Pi problem: dhcpcd not starting wpa_supplicant ======
+====== Raspberry Pi problem: dhcpcd not starting wpa_supplicant ======
 I got a problem with a **Realtek RTL8188EUS** UBS WiFi dongle, into a **Raspberry Pi Model A+**, running **Rasbpian 2017-11-29 Stretch Lite** (based on Debian 9.1).
@@ Line 45: / Line 45: @@
 wpa_supplicant -B -c/etc/wpa_supplicant/wpa_supplicant.conf -iwlan0 -Dnl80211,wext
 </code>
+Notice that the configuration file used is **/etc/wpa_supplicant/wpa_supplicant.conf**, but if one named **wpa_supplicant-wlan0.conf** exists, it will be preferred.
+===== Alternative: wpa_supplicant started by systemd =====
+The default is to start **wpa_supplicant** via **dhcpcd**, as seen above. But if you want, you can force **systemd** to start the service independently.
+You have to start the //interface-specific// service against the name **wlan0**, so make the following:
+<code>
+mv /etc/wpa_supplicant/wpa_supplicant.conf /etc/wpa_supplicant/wpa_supplicant-wlan0.conf
+systemctl enable wpa_supplicant@wlan0.service
+</code>
+After a reboot you should see the wpa_supplicant process running, and dhcpcd will configure wlan0 happily.
+===== Web References =====
+  * [[https://www.raspberrypi.org/forums/viewtopic.php?t=191061|Raspbian Stretch: Wifi not starting on boot]]