after 2nd update of Ubuntu 12.04 LTS no wlan0 again

Question

I have a Dell laptop with Ubuntu 12.04 LTS (kernel 3.5.0-49-generic) with qualcomm atheros qca9565

The first time, I did update and all the connections with the internet were lost.

Step by step, I restored the wired connection and then the wireless one. Yesterday I got a message to update due to an error, so after the second update, I lost the wireless connection : there is no wlan0 anymore, only eth0 and lo.

Ii can see all the parts of atheros card but I can't get to install it. I downloaded drivers and I tried to install them but without success.

I have read almost anything here and elsewhere about how to retrieve this and that but nothing worked.

I am new to Ubuntu. I need to restore my wireless connectivity. If possible, write me detailed instructions.

Please do what is in the accepted answer in the link below so we may see the information needed to help diagnose the issue. http://askubuntu.com/questions/425155/my-wireless-wifi-connection-does-not-work-what-can-i-do — Wild Man, May 25 '14 at 21:01
@Wild http://pastebin.ubuntu.com/7532134/ hi human,i ran the script and got the info, thank you for your interest and help — Pan, May 27 '14 at 21:42

score 0 · Accepted Answer · answered May 28 '14 at 00:37

0

Let's install the backported driver and see if that fixes your wifi connection but first remove any drivers you installed yourself.

Go here backport driver and download the newest driver to your computer then place the file on your desktop and right click and extract here.

Then do:

cd ~/Desktop/backports-3.15-rc1-1
make defconfig-ath9k
make
sudo make install
sudo modprobe -rv ath9k 
sudo modprobe -v ath9k

When there is an update to the kernel you will have to do the following.

cd ~/Desktop/backports-3.15-rc1-1
make clean
make defconfig-ath9k
make
sudo make install
sudo modprobe -rv ath9k 
sudo modprobe -v ath9k

answered May 28 '14 at 00:37

Wild Man

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Thank you man for your help,I think I do not have any installed drivers but I am not sure.I will search it before.I have tried several but not this one.Let you know soon. – Pan May 28 '14 at 22:01
Please do and if it works accept the answer so everyone will benefit from your experience. Thanks – Wild Man May 28 '14 at 22:11
I did it exactly and it worked great! I only had to run "rfkill unblock all" to switch it on. So, after the next update I will run the other part also ;-) Thank you very much for your help! – Pan May 28 '14 at 23:03

after 2nd update of Ubuntu 12.04 LTS no wlan0 again

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