USB WIFI dongle was working and now isn't (EDIMAX EW-7811UT

[Pdog]

Hi Peeps,

Looking for some advice. I purchased A Pi B+ Starter Kit which came with a NOOBS SD card. I successfully installed OpenELEC. My USB wifi dongle (Edimax EW-7811UTC) worked out of the box without any configuration.

Unfortunately it has now stopped working and in the PI only. The dongle definitely works in my PC. I have tried all USB ports and it simple not detected.

I have tried Rasplex and Raspbian, and they also cannot see the USB dongle.

I know the USB ports work because the keyboard and mice work. Can anyone offer me any advice on what I can do?

Unfortunately I have overwritten the original NOOBS SD card and can't find the NOOBS SD Card image with the openelec on it. If anyone can point me to this I would be grateful.

I have been pulling my hair out all afternoon with this.

Cheers

[Pdog]

I have seen some
Posts regarding using the terminal to perhaps force the wifi. But that is not possible if I am
Booting straight to rasplex or openelec?

[DougieLawson]

Connect your B+ to your router with a cat5 cable.
Login and run sudo apt-get update && sudo apt-get dist-upgrade
Reboot then try again with the WiFi dongle.

If it still doesn't work post the output from the following commands
ifconfig -a
lsusb # that's ell, ess, you, ess, bee.
cat /etc/network/interfaces
sudo cat /etc/wpa_supplicant/wpa_supplicant.conf # you may want to redact the passwords in there.

[Pdog]

Thanks for the reply. I'll
Give this ago.

Stupid question. I can plug it in.

So I need to SSH into the device and run the commands with the USB wifi dongle plugged in.

I'll post back the results.

Cheers

[ThreePointOneDour]

I'm having very similar problems with my Netgear dongle. My dongle is always causing me problems.

[Onira]

guys, show your /etc/network/interfaces file

[DougieLawson]

guys, show your /etc/network/interfaces file

More important is to show the output from an lsusb command (that's ell, ess, you, ess, bee).

[ThreePointOneDour]

I edited my file according to this

http://www.raspberrypi.org/forums/viewt ... 35#p651635

auto lo

iface lo inet loopback

allow-hotplug eth0
iface eth0 inet dhcp

allow-hotplug wlan0
iface wlan0 inet static
address xxx.xxx.x.xxx
netmask xxx.xxx.xxx.x
gateway xxx.xxx.x.x
wpa-ssid...
wpa-psk ...

iface default inet dhcp

I had a longer connection, but has dropped out again.

[DougieLawson]

And the output from the lsusb command shows us what?

[ThreePointOneDour]

And the output from the lsusb command shows us what?

Shows us that everything is there and recognised.

[DougieLawson]

And the output from the lsusb command shows us what?

Shows us that everything is there and recognised.

But it doesn't show that to me! Since I'm not in the room with you.

[ThreePointOneDour]

And the output from the lsusb command shows us what?

Shows us that everything is there and recognised.

But it doesn't show that to me! Since I'm not in the room with you.

I did guess that's why you asked.

[ThreePointOneDour]

I'm not sure if there's some kind of ip address conflict going on. If I look at my LAN and look at attached devices, it comes and goes, MAC address changes (device name then goes to unkown), then IP address changes, something wild is going on.

[Onira]

Code: Select all

$ lsusb
Bus 001 Device 002: ID 0424:9512 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 1d57:ad02 Xenta
Bus 001 Device 005: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB
Bus 001 Device 006: ID 08bb:27c7 Texas Instruments Japan
Bus 001 Device 009: ID 152d:2329 JMicron Technology Corp. / JMicron USA Technology Corp. JM20329 SATA Bridge

Show us your output
There is nothing to be afraid of showing it

[Pdog]

wow my post has been slightly hijacked here!

I tried this:

sudo apt-get update && sudo apt-get dist-upgrade

It didn't recognise the command.

I then typed: ifconfig -a
it should the wired ethernet and the loopback. (i'll post the output tomorrow when I back at home) along with the isusb.

Can someone elpalin how I show the: "/etc/network/interfaces" file??

Thanks

[Onira]

Code: Select all

$ cat /etc/network/interfaces

and as we asked, show us the output of

Code: Select all

$ lsusb

[ThreePointOneDour]

wow my post has been slightly hijacked here!

Sorry!

Though, if we double up, maybe we can get more info to sort this out? If you'd rather me not, just say and I'll go

[ThreePointOneDour]

Code: Select all

$ lsusb
Bus 001 Device 002: ID 0424:9512 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 1d57:ad02 Xenta
Bus 001 Device 005: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB
Bus 001 Device 006: ID 08bb:27c7 Texas Instruments Japan
Bus 001 Device 009: ID 152d:2329 JMicron Technology Corp. / JMicron USA Technology Corp. JM20329 SATA Bridge

Show us your output
There is nothing to be afraid of showing it

Ok, I can't keep it secret for much longer.....

Bus 001 Device 002: ID 0424:9512 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 046d:c078 Logitech, Inc.
Bus 001 Device 005: ID 03f0:0024 Hewlett-Packard KU-0316 Keyboard
Bus 001 Device 006: ID 0846:9041 Netgear, Inc. WNA1000M 802.11gnb [Realtek RTL8188CUS]

[DougieLawson]

Start with this in /etc/network/interfaces

Code: Select all

auto lo
iface lo inet loopback

auto eth0
iface eth0 inet dhcp

allow-hotplug wlan0
iface wlan0 inet manual
wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf
wireless-power off
iface default inet dhcp

and this in /etc/wpa_supplicant/wpa_supplicant.conf

Code: Select all

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

network={
        ssid="yourWiFiSSIDgoeshere"
        psk="yourWiFipasswordgoeshere"
}

When that is working check your network settings & switch to a static address.

To check settings use route -n which should get something like this

Code: Select all

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.x.ggg   0.0.0.0         UG    0      0        0 wlan0
192.168.x.0     0.0.0.0         255.255.255.0   U     0      0        0 wlan0

You can then use the gateway value and Genmask (aka netmask) to set-up your static address.

Code: Select all

iface default inet static
address 192.168.x.ppp
gateway 192.168.x.ggg
netmask 255.255.255.0

The dongle you've got should work out of the box, no special drivers needed, the drivers are built-in.

[Pdog]

wow my post has been slightly hijacked here!

Sorry!

Though, if we double up, maybe we can get more info to sort this out? If you'd rather me not, just say and I'll go

No its fine mate. I am just trying to post my information now, in the hope someone can help. I have a new SD card now and fresh install of OPENELEC from NOOBS 1.3.9

[Pdog]

I ran the commands as suggested but it would not locate the path /files I also got Permission dened.

Now running Raspbian, I have started off by running the following command:

sudo apt-get update && sudo apt-get dist-upgrade

Its pulling down a lot of packages and installing them.

Rebboted with the wifi dongle still nothing, here is the output as requested:

lsusb:
pi@raspberrypi ~ $ lsusb
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 7392:a812 Edimax Technology Co., Ltd
Bus 001 Device 005: ID 045e:0040 Microsoft Corp. Wheel Mouse Optical

So it can see the Edimax device

wpa_gui in the Rasbian OS cannot see any adapter on the dropdown list.

cat /etc/network/interfaces

pi@raspberrypi ~ $ cat /etc/network/interfaces
auto lo

iface lo inet loopback
iface eth0 inet dhcp

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

sudo cat /etc/wpa_supplicant/wpa_supplicant.cong

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

EDIT:

I edited the cat /etc/network/interfaces

auto lo

iface lo inet loopback
iface eth0 inet dhcp

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

I was watching the console when it rebooted and it stated it didn't know what wlan0 was

It does correctly identify the Edimax device though at boot.

Tried this:

sudo ifconfig wlan0 up

wlan0: ERROR while getting interface flags: No such device


Can anyone help with the above information provided?

Thanks

P

[DougieLawson]

https://github.com/OpenELEC/OpenELEC.tv/issues/2877

[Pdog]

Thanks Dougie,

The device was working in the beginning!

Can you see any errors in the outputs above?

[DougieLawson]

I'd toss it in the drawer and buy a new one that has a well supported chipset.

[Pdog]

Shame it cost £15 and was purchased for the pi.

Could an update to the pi have caused it to stop working, even if I have reimaged the SD card multiple times?