WIPI (wifi) adapter trouble with RPI version 2

Need to see a lsusb without the dongle and with the dongle in. BTW, I have a RPI version 2 with Wifi dongle.

Clem

RPi USB Wi-Fi Adapters - eLinux.org You can check some of the adapters and see how well they may work.

Clem

Hello rgcooperjr

Welcome to the element14 Community, I will move this over to the Raspberry Pi2 area as it is a better fit.

Thank you,

Jamie

You might want to look at a very similar discussion: Just got a WiPi and i can't get to connect to my wireless Internet

The software base on the Pi 2 is different from that of its predecessors.  Given that, configuration parameter handling and defaults might be different.  Specifically, make sure that the cryptography protocol on the Pi 2 and your router are in agreement (CCMP vs. TKIP).

After changing the configuration for wlan0 (wireless interface name) one way or the other, run:

sudo ifdown wlan0   # assuming that wlan0 is currently up

sudo ifup wlan0

Here are the screen scrapes you asked for.  Please note that I have tried many permutations and confirmed that the SSID and PSK’s are correct.  Also note that my wireless router does not advertise my SSID. As I said earlier all wireless adapter work fine on all my other “B” and “B+” RPI’s.  I have tried updating RASPBIAN 2/2015 version for RPi-2 and then installed any updates too.  There seems to others, based on the forum postings, that indicate this to be a common problem.

pi@raspberrypi ~ $ sudo lsusb >no_wipi_installed
Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp.
Bus 001 Device 004: ID 0557:7000 ATEN International Co., Ltd Hub
Bus 001 Device 009: ID 0951:1603 Kingston Technology DataTraveler 1GB/2GB Pen Drive
Bus 001 Device 006: ID 046d:c318 Logitech, Inc. Illuminated Keyboard

pi@raspberrypi ~ $ sudo lsusb >wipi_installed
Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp.
Bus 001 Device 004: ID 0557:7000 ATEN International Co., Ltd Hub
Bus 001 Device 010: ID 148f:5370 Ralink Technology, Corp. RT5370 Wireless Adapter
Bus 001 Device 009: ID 0951:1603 Kingston Technology DataTraveler 1GB/2GB Pen Drive
Bus 001 Device 006: ID 046d:c318 Logitech, Inc. Illuminated Keyboard

pi@raspberrypi ~ $ sudo cp /etc/network/interfaces /mnt/USB_HD
pi@raspberrypi ~ $ sudo cp /etc/wpa_supplicant/wpa_supplicant.conf /mnt/USB_HD
pi@raspberrypi ~ $ ifconfig
eth0      Link encap:Ethernet  HWaddr b8:27:eb:64:6f:52 
           inet addr:192.168.1.18  Bcast:192.168.1.255  Mask:255.255.255.0
           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
           RX packets:12543 errors:0 dropped:0 overruns:0 frame:0
           TX packets:20872 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:1000
           RX bytes:2477026 (2.3 MiB)  TX bytes:24375736 (23.2 MiB)

lo        Link encap:Local Loopback 
           inet addr:127.0.0.1  Mask:255.0.0.0
           UP LOOPBACK RUNNING  MTU:65536  Metric:1
           RX packets:36492 errors:0 dropped:0 overruns:0 frame:0
           TX packets:36492 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:0
           RX bytes:395374636 (377.0 MiB)  TX bytes:395374636 (377.0 MiB)

wlan0     Link encap:Ethernet  HWaddr 00:0f:13:40:24:1d 
           UP BROADCAST MULTICAST  MTU:1500  Metric:1
           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
           TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:1000
           RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

pi@raspberrypi ~ $ ifconfig >ifconfig.txt
pi@raspberrypi ~ $ sudo ifdown wlan0 >ifdown.txt
Internet Systems Consortium DHCP Client 4.2.2
Copyright 2004-2011 Internet Systems Consortium.
All rights reserved.
For info, please visit https://www.isc.org/software/dhcp/

Listening on LPF/wlan0/00:0f:13:40:24:1d
Sending on   LPF/wlan0/00:0f:13:40:24:1d
Sending on   Socket/fallback

pi@raspberrypi ~ $ sudo ifup wlan0 >ifup.txt
Internet Systems Consortium DHCP Client 4.2.2
Copyright 2004-2011 Internet Systems Consortium.
All rights reserved.
For info, please visit https://www.isc.org/software/dhcp/

Listening on LPF/wlan0/00:0f:13:40:24:1d
Sending on   LPF/wlan0/00:0f:13:40:24:1d
Sending on   Socket/fallback
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 7
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 15
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 12
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 21
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 6
No DHCPOFFERS received.
No working leases in persistent database - sleeping.
pi@raspberrypi ~ $

wpa_supplicant.conf –

ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1

network={
       ssid="MY_SSID"
       psk=”MY_PSK”

1
       proto=RSN
       key_mgmt=WPA-PSK
       pairwise=CCMP
       auth_alg=OPEN
}

Interfaces –

auto lo eth0

iface lo inet loopback
iface eth0 inet dhcp

allow-hotplug wlan0
iface wlan0 inet dhcp
wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

iface default inet dhcp

Thank you,

Bob

I am not there eyes-on but it doesn't appear to be a hardware error as the adapter is seems to be trying as evidenced by the DHCPDISCOVER lines and the "no offers" result.  I'd bet your Pi 2 is okay and so is the "WIPI".

At the moment, you are using an Ethernet cable.  Have you brought the Pi 2 up-to-date?  If not, please do so and re-test.

The wpa_supplicant.conf file looks messed up.  There is a text line of only "1" in the middle.  Why?  Does the file actually look like the following:

network={
       ssid="MY_SSID"
       psk=”MY_PSK”

                proto=RSN
       key_mgmt=WPA-PSK
       pairwise=CCMP
       auth_alg=OPEN
}

Have you tried letting your router advertise SSID?  Does that change your experience?  I am guessing that you have a security concern with leaving it on permanently.

Are you using a wifi extender?  Sometimes these devices block DHCP operations to certain wifi client devices (compatibility issue).  Is the "MY_SSID" the extender?  If so, try going directly.

I am using an EDUP adapter (Amazon.com: EDUP Mini Wireless 11N 300M USB LAN Card WiFi Adapter Nano Card Win7/8 Mac: Computers & Accessories) which worked immediately with a router that advertises SSID.  I never edited the wpa_supplicant file.

Best wishes resolving this,

Richard

Pi 2 is up-t-date. All updates were installed, this was one of the first things I did once the OS was running.

I tried the proto=RSN earlier - no luck, same responses.  Oh and without the Ethernet cable connected.

I agree that it probably is a security issue now after several hours of testing, just can't get the adapter to connect and get an IP lease.  I am security conscience and hence, not advertising SSID. But will try to turn it on for a test.

I am not using a WIFI extender and I gave bogus ssid and psk because I didn't want to let the world know what the real ones are.

This is the adapter I am using: http://www.newark.com/element14/wipi/frequency-rf-2-4ghz/dp/07W8938?mckv=sbefPUqKJ|pcrid|57087233661|plid|&CMP=KNC-GUSA-GEN-SHOPPING-ELEMENT14?gross_price=

This adapter works flawlessly on my other "B" and "B+" setups with RASPIAN versions for them. Your experience with EDUP adapters is what I experience the these models but not the PI 2 model.

I will try your suggestions and report back.

Thank you and regards,

Bob

Bob, are you sure that your /etc/wpa_supplicant/wpa_supplicant.conf file is correct?  As shown in this discussion, there is a syntax error.  See my previous response to you.

Richard, Nice catch however I did not check the post before sending it.  I guess I was tired at the time.  The mistake I made was a bad copy/paste and fat-finger edit into the post.  I did find what is going on and I did not have to turn on SSID advertising in the router.

Here is what fixed it for me.  The wpa_supplicant.conf file is now:

ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev

update_config=1

network={

               ssid="MySSID"

               scan_ssid=1

               psk="MyPSK"

               proto=RSN

               key_mgmt=WPA-PSK

               pairwise=CCMP

               auth_alg=OPEN

}

NOTE: The fix was adding line "scan_ssid=1" in the position above. My PI 2 now works with all wifi adapters and the "WIPI" adapter. DHCP leases are accepted and there are no other issues noted.

SECURITY NOTE: The psk line above can be improved by using wpa_passphrase to convert the quoted open text in the wpa_supplicant.conf to a less open hexadecimal format that is harder to replicate.  Do not put quotes around the hex pass phase generated by wpa_passphrase.

Please mark Richard's answer as correct. ty