I am facing this problem from many months and still it is not debugged. I am using Lenovo Z570 laptop in which there is two operating system is installed one is Windows 7 and another is Kali linux and using public wifi connection. Internet works great in Windows 7 but not in Kali linux. In linux it works fine when it connect to wifi in starting but later gives problem.
What should I do to get rid of this problem?