Recently I installed Ubuntu 16.04 on my vaio vpccb17fx with Intel Centrino Wireless N1000. Unfortunately my signal strength is very weak, it keeps disconnecting and actually I can't use Wifi! I don't know what to do as I'm new to Linux. I would be very grateful for someone who could help me (and maybe others have the same problem) Thanks.
WIFI regulatory domain not set
Set the WIFI country code for the Kernels current regulatory domain if it isn't set.
iw reg get
To set it
sudo nano /etc/default/crda REGDOMAIN=<ISOCODE>
Download and install the packages that corresponds to your architecture (e.g. AMD64, kernel 4.6-rc7-wily)
linux-headers-4.6.0-040600rc7-generic_4.6.0-040600rc7.201605081830_amd64.deb linux-headers-4.6.0-040600rc7_4.6.0-040600rc7.201605081830_all.deb linux-image-4.6.0-040600rc7-generic_4.6.0-040600rc7.201605081830_amd64.deb sudo dpkg -i *.deb sudo reboot