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I have installed Ubuntu 15.04 on my new Intel NUC
However the wifi does not work.
It complains (in dmesg) that the iwlwifi module was unable to load the firmware code because iwlwifi-3165-10.ucode could not be found.
I've tried installing newer versions of iwlwifi (from backports), but that seemed very complicated and didn't seem to help.
I had this same problem but figured it out. The best way to see if this was your issue is to run this script:
wget -N -t 5 -T 10 https://github.com/UbuntuForums/wireless-info/raw/master/wireless-info
chmod +x wireless-info
./wireless-info
You'll find the output in the /root directory. Toward the bottom of the output, you may see some dmesg errors that say that it has attempted to load the right iwlwifi drivers but ultimately says "no suitable firmware found!"
To fix this problem:
Check the Linux kernel you are using
uname -r
Even if you've installed Ubuntu 15.04, it's still using the 3.19 Kernel.
Right now, Intel is only supporting the 3165 hardware with firmware for 4.1+, but I couldn't get it to work until I upgraded to 4.2. It's easiest by using wget to get the right version for your hardware, and for whatever kernel you want to use. I used the most recent version on kernel.org. Use wget to get them:
wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.2-rc8-unstable/linux-image-4.2.0-040200rc8-generic_4.2.0-040200rc8.201508240030_amd64.deb http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.2-rc8-unstable/linux-headers-4.2.0-040200rc8_4.2.0-040200rc8.201508240030_all.deb http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.2-rc8-unstable/linux-headers-4.2.0-040200rc8-generic_4.2.0-040200rc8.201508240030_amd64.deb
And then issue the following command:
sudo dpkg -i *.deb
Reboot and you should now see the correct kernel:
sudo uname -r
Update and upgrade, and you're all set:
sudo apt-get update
sudo apt-get upgrade
Suddenly, wireless. And this time, you can actually connect to it. :D
Some last minute clean up, regenerating the grub menu and removing the previous kernel:
sudo update-grub
sudo apt-get autoremove
BAM! You're done.
I solved it by upgrading the linux kernel to 4.1.
I used this guide: http://ubuntuhandbook.org/index.php/2015/06/upgrade-kernel-4-1-ubuntu-linux-mint/
sudo modprobe -r acer-wmi; sudo rfkill unblock all. After confirming, the following command makes it permanent:echo "blacklist acer-wmi" | sudo tee -a /etc/modprobe.d/blacklist.conf