New Problem

I am now able to access the internet but, when I connect to netgear router NO data is recieved and I can't also ping my router.This does not happen with any other router like DLINK or my phone's HOTSPOT. PLEASE can anyone help where the problem is.

The below problem is solved.

I have Sony vaio laptop having installed Ubuntu 14.04 on it. Laptop can connect to the wifi router but when browser is opened I get the Web page is not available error.

I did

$ ping google.com
ping: unknown host google.com

I ping my laptop. That returned success. But when I ping some other IPs it says destination host unavailable

This error started since I hard reset my router


$ lspi -knn | grep Net -A2
02:00.0 Network controller [0280] : Qualcomm Atheros AR9485 Wireless Network Adapter [168c:0032] (rev 01)
Subsystem : Foxconn Interntional , Inc Device [105b: e044]
kernel driver in use : ath9k

I think I have messed up some thing because of trying too many solution. Is there any way like we have factory reset in mobile phones...so that I can be able to start again. One thing I can


with 100% success

Edited 2015-06-05

This is what I tried on terminal

sudo lshw -c network
sudo service network-manager restart
sudo service networking restart
sudo /etc/ini.d/networking restart
sudo ifconfig wlan0 down
sudo service networking restart
sudo /etc/init.d/networking restart
sudo ifconfig wlan0 down
sudo ifconfig wlan0 up
sudo apt-get remove --purge resolvconf
sudo dpkg --configure -a
lspci -knn | grep Net -A2
lsb_release -rcd ; uname -r;
lspci -nnk  | grep -iA2 net
lsmod rfkill list all nmcli nm status
nmcli nm enabled true
echo 'options ath9k nohwcrypt=1' sudo tee /etc/modprobe.d/ath9k.conf
rfkill list

Output of route -vn

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface         UG    0      0        0 br0     U     1000   0        0 br0   U     0      0        0 br0

The command ping does not give anything! After some time I press Ctrl+C and all this gives me 100% data loss.

How should I proceed?

  • Comments are not for extended discussion; this conversation has been moved to chat. – Mitch Jun 5 '15 at 20:29

Hello To all those viewed this post. This issue was solved. People commenting on the post made me to detect the point where the error was caused.

This is what I made mistakes

I unistall the resolvconf file

And then I tried some one's answer, Which suggested that to change the Proxy settings of the Network. I did as per his suggestion.

Then People on Reddit suggested to again install the resolvconf file. I installed manually.

But then the issue was with the Proxy change I did it. He then suggested me to change it to none and Boom the problem was solved.

And really I made so many wrong changes that I did in terminal as listed above.

Today What I learned is, first check the command for which purpose it is used to execute and then execute.

Hearty Thanks to all once again


  • 1
    The best part of this is "first check the command for which purpose it is used to execute and then execute." Bravo – Elder Geek Jun 12 '15 at 12:30

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