help with wpa_supplicant - Raspberry Pi Forums

dear all,

after trawling forums several weeks, i'm still struggling wifi connection using wpa_supplicant method. many others seem do.
i'm confident driver correctly installed- can wifi connection without problem providing ssid/password directly in /etc/network/interfaces.
ability able connect different hotspots visit make life easier.

after not far off dozen attempts, last /etc/network/interfaces have ended is:

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auto lo iface lo inet loopback  auto eth0 allow-hotplug eth0 iface eth0 inet dhcp  allow-hotplug wlan0 iface wlan0 inet manual wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf iface default inet dhcp 

in past have tried different /etc/wpa_supplicant/wpa_supplicant.conf files, including:

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ctrl_interface=/var/run/wpa_supplicant group=netdev ctrl_interface_group=0 update_config=1  network={     ssid="neuf_1234"     scan_ssid=0     key_mgmt=wpa-psk     psk="xxxx" }  network={     ssid="rdc"     scan_ssid=0     proto=rsn     key_mgmt=wpa-psk     psk="yyyy" }

or

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ctrl_interface=dir=/var/run/wpa_supplicant group=netdev update_config=1  network={     ssid="neuf-1234"     psk="xxxx"     id_str="home"  network={     ssid="rdc"     psk="yyyy"     id_str="away" } 

or

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ctrl_interface=dir=/var/run/wpa_supplicant group=netdev update_config=1  network={     ssid="rdc"     scan_ssid=1     psk="yyyy"     id_str="home"     priority=5 }

none of them give kind of connection.
i'm not sure @ stage if problem ./interfaces or ./wpa_supplicant.conf.

secondary related question, technically possible connection eth0 @ times network cable connected, irrespective of wifi state?
make troubleshooting easier if ssh pi eth0, @ least!

going wrong?

cheers,

mal

raspberrypi