Wifi problem on Ubuntu 16.04

Question

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>

Reboot.

Upstream kernel

Try the latest upstream kernel. I saw WIFI bug-reports that were fixed with a new kernel, so it's worth a try. It also fixed mine. Read more about upstream kernels here.

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

Comments

[Pilot6]

Try this solution askubuntu.com/a/663328/167850

[Hamed.Y]

I tried this, but made no difference, so reverted that.

[Hamed.Y]

Only Additional Driver: Processor microcode firmware for Intel CPUs for intel-microcode, nothing else

[Jitendra]

This problem in More in details and solution works<br> askubuntu.com/questions/762198/16-04-lts-wifi-connection-iss‌​ues/…

[Hamed.Y]

Made no difference, :( I think I should dual boot with Windows so that I can use wifi

[Janghou]

Try the new kernel, i updated my answer.