Public bug reported:

rtl8821ae does not work out-of the box on Ubuntu 16.04. It does not
detect any WIFi networks and laptop starts with Wifi disabled in
NetworkManager. To make rtl8821ae work I have to do the following:

echo "blacklist ideapad_laptop" | sudo tee /etc/modprobe.d/idepad.conf


After that rtl8821ae loses connection occasionally. None of those helped:

echo rtl8812ae  >>  /etc/modules
echo "options rtl8821ae ips=0 fwlps=0" | sudo tee /etc/modprobe.d/rtl8821ae.conf
sudo modprobe -r rtl8821ae && sudo modprobe rtl8821ae
options rtl8821ae ips=0 swenc=1 debug=5 msi=0
sudo iw dev wlp2s0 set power_save off

Installing new driver from here https://github.com/lwfinger/rtlwifi_new
did not help.


Issue close to this one was reported here: 
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1526683

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-36-generic 4.4.0-36.55
ProcVersionSignature: Ubuntu 4.4.0-36.55-generic 4.4.16
Uname: Linux 4.4.0-36-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC1:  antoshkka   3397 F.... pulseaudio
 /dev/snd/controlC0:  antoshkka   3397 F.... pulseaudio
CurrentDesktop: Unity
Date: Sun Sep 11 10:09:39 2016
HibernationDevice: RESUME=UUID=de96877a-7ace-47cc-ac4c-b4662a72a1b7
InstallationDate: Installed on 2016-09-10 (0 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
MachineType: LENOVO 80NY
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-36-generic.efi.signed 
root=UUID=d62213ac-da8e-417a-83fb-b8163b78199b ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-36-generic N/A
 linux-backports-modules-4.4.0-36-generic  N/A
 linux-firmware                            1.157.3
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/15/2015
dmi.bios.vendor: LENOVO
dmi.bios.version: CECN43WW
dmi.board.asset.tag: NO Asset Tag
dmi.board.name: Allsparks 5B
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40688 WIN
dmi.chassis.asset.tag: NO Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo ideapad Y700-15ACZ
dmi.modalias: 
dmi:bvnLENOVO:bvrCECN43WW:bd09/15/2015:svnLENOVO:pn80NY:pvrLenovoideapadY700-15ACZ:rvnLENOVO:rnAllsparks5B:rvrSDK0J40688WIN:cvnLENOVO:ct10:cvrLenovoideapadY700-15ACZ:
dmi.product.name: 80NY
dmi.product.version: Lenovo ideapad Y700-15ACZ
dmi.sys.vendor: LENOVO

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Confirmed


** Tags: amd64 apport-bug rtl8821ae xenial

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https://bugs.launchpad.net/bugs/1622293

Title:
  rtl8821ae WiFI does not work on Ubuntu 16.04

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