This is my story with an Intel Dual Band Wireless-AC 3168 (M.2 2230) and Ubuntu Linux:
- I decide to manually update Ubuntu 16.04 LTS, including the kernel/dist-upgrade thing.
- Reboot.
- No WiFi connection,
iwconfig
command returns no adapters. - While testing several reboots, I notice the wireless adapter sometimes appears and works.
- I decide to install Ubuntu 18.04 LTS from scratch in another hard drive.
- Boot live USB image (18.04.0 Desktop), go to desktop.
- I try Internet connection, I notice WiFi is very slow, like ancient times.
- I plug Ethernet cable and perform a minimal Ubuntu installation with last downloaded updates.
- Reboot, unplug Ethernet cable.
- I try Internet connection, WiFi is very slow.
- I search for solutions, I disable 802.11n (iwlwifi 11n_disable=1), WiFi works (connection speed is lower than 11Mbps), even after reboots.
- Not satisfied with solution, I decide to ask here and run Ubuntu forums network script.
- Network script result is HERE.
Related question threads I found:
Best Answer
What I did to solve this issue is installing the latest stable kernel, according to kernel.org that is at the time of writing
4.17.13
.I installed
ukuu
, the ubuntu kernel update utility using the ppa from "Tony George" (https://launchpad.net/~teejee2008/+archive/ubuntu/ppa):Then run ukuu either through the console (
ukuu --help
) or use the graphical version which can be found in the menu. Install the latest stable kernel and reboot.Warning: There might be some issues; if they persist after a reboot, during the boot sequence, select your old kernel version (4.15 on my machine).