Wi-Fi connection problem on Ubuntu 14.04

ubuntu

I have installed Ubuntu 14.04 (Thusty Tahr) and Wi-Fi scans the networks and connects correctly, but Mozilla Firefox or Google Chrome can’t open websites. It works with cable connection trouble-free.

I looked for a solution long time on the Internet. Then I found that there is a bug in Ubuntu Network Manager. Because of this bug Ubuntu Network Manager takes Bit Rate=1 Mb/s for wlan0.

Solution:

iwconfig wlan0 rate 54M

Make this automatically for every system start:

sudo gedit /etc/rc.local
# add the following line before exit 0 line, save and exit
iwconfig wlan0 rate 54M

Reference: askubuntu.com