Just a quick little guide on how to fix the wi-fi and bluetooth issues on the official cm11 nightlies!
You find the official cm11 a bit laggy? you thought it would be a great idea to install williams kernel V2? after installation you noticed that it runs so much better and are really happy with it till you notice that wi-fi and bluetooth aren't working? Well here is a simple fix for that!
1: download these 2 files: https://www.mediafire.com/folder/4hs..._%26_Bluetooth (credit goes to @alcatraz999902)
2: navigate to system/lib/modules and delete wlan.ko and scsi_wait_scan.ko
3: copy the files you downloaded earlier (wlan.ko and scsi_wait_scan.ko) to system/lib/modules
4: change the permissions to rwrr:
A: you can use file explorers like es file explorer to change the perms (rwrr 644)
B: you can also open a terminal, mount your system as rw (mount -o rw,remount /system) and cd to /system/lib/modules then type these 2 commands:
chmod 644 wlan.ko
chmod 644 scsi_wait_scan.ko
5: reboot your device
6: Enjoy official cm nightlies with working wi-fi and bluetooth!