Usb wifi not working after new Ubuntu installation

hello guys

sorry for my english (I’m Italian :smiley: )

As the title of the post, after having re-installed ubuntu studio, my wifi key no longer works.

I had previously followed the steps in this forum at this link: http://linuxforums.org.uk/index.php?topic=11065.0 , and the wifi key worked properly, but, now, after performing the steps in the same procedure, nothing happens and the usb is “turned off”. :cry:

Could you help me? :stuck_out_tongue:

thanks!!!

Hi iena5, and welcome to the forum :slight_smile:

Can you post the output from these commands (with your wireless adapter plugged in):

sudo lshw -C network

and

lsusb

and

iwconfig

and

ifconfig

and

iwlist scanning

and

rfkill list

hello!

Meanwhile, thank you :slight_smile: ( I’m new to the Linux world, please already be forgiven if the error was obvious )

I do not know if there is a more correct procedure to attach the results of the terminal. I will use directly copy and paste

sudo lshw -C network:

*-network
description: Ethernet interface
product: RTL8111/8168 PCI Express Gigabit Ethernet controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:04:00.0
logical name: eth0
version: 06
serial: bc:5f:f4:cb:58:c6
size: 100Mbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8168e-3_0.0.4 03/27/12 ip=192.168.1.2 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s
resources: irq:51 ioport:e000(size=256) memory:d0004000-d0004fff memory:d0000000-d0003fff
*-network DISABLED
description: Wireless interface
physical id: 1
bus info: usb@2:4
logical name: wlan0
serial: 64:66:b3:22:89:4a
capabilities: ethernet physical wireless
configuration: broadcast=yes driver=r8188eu multicast=yes wireless=unassociated

lsusb:

Bus 002 Device 004: ID 0bda:8179 Realtek Semiconductor Corp.
Bus 003 Device 002: ID 04f3:0234 Elan Microelectronics Corp.
Bus 004 Device 006: ID 0e6f:0301 Logic3
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 007 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 008 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 009 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 010 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 011 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub

iwconfig:

eth0 no wireless extensions.

lo no wireless extensions.

wlan0 unassociated Nickname:“WIFI@REALTEK
Mode:Auto Frequency=2.412 GHz Access Point: Not-Associated
Sensitivity:0/0
Retry:off RTS thr:off Fragment thr:off
Power Management:off
Link Quality:0 Signal level:0 Noise level:0
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0

ifconfig:

eth0 Link encap:Ethernet IndirizzoHW bc:5f:f4:cb:58:c6
indirizzo inet:192.168.1.2 Bcast:192.168.1.255 Maschera:255.255.255.0
indirizzo inet6: fe80::be5f:f4ff:fecb:58c6/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:5378 errors:0 dropped:0 overruns:0 frame:0
TX packets:5072 errors:0 dropped:0 overruns:0 carrier:0
collisioni:0 txqueuelen:1000
Byte RX:3703395 (3.7 MB) Byte TX:1203139 (1.2 MB)

lo Link encap:Loopback locale
indirizzo inet:127.0.0.1 Maschera:255.0.0.0
indirizzo inet6: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:315 errors:0 dropped:0 overruns:0 frame:0
TX packets:315 errors:0 dropped:0 overruns:0 carrier:0
collisioni:0 txqueuelen:0
Byte RX:31464 (31.4 KB) Byte TX:31464 (31.4 KB)

iwlist scanning:

eth0 Interface doesn’t support scanning.

lo Interface doesn’t support scanning.

wlan0 No scan results

rfkill list: This command has not resulted any response

(Ok it is clear that the wifi is not set up very well :slight_smile:

It appears as though the drivers are loaded, but may be broken.

Can you tell us which distro, version, architecture you’re using

example = Ubuntu 12.04 32bit

If unsure … just post the output from:

uname -a

and

cat /etc/*release

Hi,

wow, it’s a “wonderful” information! :cry: … you think it’s possible resolve this issue?

however:

uname -a
Linux iena5-desktop 3.8.0-32-lowlatency #24-Ubuntu SMP PREEMPT Mon Oct 7 08:03:08 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

cat /etc/*release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=13.04
DISTRIB_CODENAME=raring
DISTRIB_DESCRIPTION=“Ubuntu 13.04”
NAME=“Ubuntu”
VERSION=“13.04, Raring Ringtail”
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME=“Ubuntu 13.04”
VERSION_ID=“13.04”
HOME_URL=“http://www.ubuntu.com/
SUPPORT_URL=“http://help.ubuntu.com/
BUG_REPORT_URL=“Bugs : Ubuntu

thanks for your support!!!

Make SURE your PC is connected to the internet via an ethernet cable, then open a terminal and run these commands in sequence:

sudo apt-get install git linux-headers-generic build-essential

then

mkdir ~/RTL8188EU-3.8kernel

then

cd ~/RTL8188EU-3.8kernel

then

git clone git://github.com/lwfinger/rtl8188eu

then

cd ~/RTL8188EU-3.8kernel/rtl8188eu

then

make

then

sudo make install

then

sudo cp -v ~/RTL8188EU/rtl8188eu/rtl8188eufw.bin /lib/firmware/rtlwifi/

then

sudo depmod -a

then

sudo update-initramfs -u

then

sudo modprobe -r r8188eu

(don’t worry if that last command fails … just carry on below)
then

sudo modprobe 8188eu

Did wireless spring to life ?

If not, REBOOT … does it work now ?

if not, what’s the output from:

lsmod | grep 8188

So, I performed all the steps (the LED of the key has been turned off, so I rebooted). after a reboot I again performed the last step, but nothing.

the command - lsmod | grep 8188 - give this result: 8188eu 692712 0

(I do not know if it is important, the number 8188 appears in red ??? )

Not that’s just showing the match of the query in red.

What’s the output from:

rfkill list

now ?

Hello.

excuse me for the delay in the response. I tried to run the command you have posted and then try to give the “sudo modprobe 8188eu.” But the key continues to be off. I do not know if that was the procedure that I should follow. :frowning:

What’s the output from:

sudo lshw -C network

and

rfkill list

okay, then for -sudo lshw -C network-:

*-network
description: Ethernet interface
product: RTL8111/8168 PCI Express Gigabit Ethernet controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:04:00.0
logical name: eth0
version: 06
serial: bc:5f:f4:cb:58:c6
size: 100Mbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8168e-3_0.0.4 03/27/12 ip=192.168.1.7 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s
resources: irq:52 ioport:e000(size=256) memory:d0004000-d0004fff memory:d0000000-d0003fff
*-network DISABLED
description: Wireless interface
physical id: 1
bus info: usb@2:4
logical name: wlan0
serial: 64:66:b3:22:89:4a
capabilities: ethernet physical wireless
configuration: broadcast=yes driver=r8188eu multicast=yes wireless=unassociated

while the command -rfkill list - nothing is shown

Is there any output from:

modinfo 8188eu

If so, run:

sudo modprobe -r r8188eu

then

sudo modprobe 8188eu

then post the output from:

sudo lshw -C network

and

rfkill list

and

lsmod | grep 8188