After installing kernel upgrade from 3.2 to 3.5 wifi does not work. I have intel wireless. Wireless adapter isn't shown in network settings. How can I enable wifi?
There is a reason the mainline kernels are meant for debugging and testing purposes only. See the below question for more details -- it explicitly warns you may lose wireless:
Should I upgrade to the "mainline" kernels?
I recommend you go back to the official Ubuntu kernel. The mainline kernels, or kernels you build yourself are not supported and often result in problems with graphics and/or wireless. While the Intel wireless drivers are in-kernel, there is no guarantee they will always work on a non-official kernel.
If you were having problems that required you to try upgrading to a mainline kernel, please open a question about that problem and we can try to help you resolve it with the existing kernel.
