I've bought a new laptop - the Lenovo ThinkPad X1 Carbon - and dual-booted Ubuntu 14.04 (I need to stick with 14.04) with Windows 10. Ubuntu could not detect any WiFi networks, and in Software & Updates > Additional Drivers there are no proprietary drivers in use.
The PC has the Intel(R) Dual Band Wireless AC 8265: https://www.intel.com/content/www/us/en/support/articles/000005511/network-and-i-o/wireless-networking.html.
I believe the kernel needs to be updated. But I am not sure of this or how to do it as I am new to Ubuntu. Also, I need to do this offline as the laptop has no Ethernet port. (I could also use another laptop to download any files).
Any help to fix this would be highly appreciated!
Edit: I tried updating the kernel by following http://ubuntuhandbook.org/index.php/2017/02/install-kernel-4-10-ubuntu-linux-mint/
I then downloaded firmware from https://www.intel.com/content/www/us/en/support/articles/000005511/network-and-i-o/wireless-networking.html, and copy-pasted the files to /lib/firmware.
After this, WiFi networks could be detected and I even connected to my home network.
Please let me know if this is a good solution given that I want to stick to 14.04 (it's working fine now but I don't know how stable the connection is and whether it'll randomly disconnect from time to time)
rfkill list all
Or else:dmesg | grep iwl
– chili555 Jan 25 '18 at 15:17Here is the output: paste.ubuntu.com/26470501. Also, if I simply reboot, it gets fixed (temporarily). – Tushar Jan 28 '18 at 18:15