Anton Polukhin, thank you for reporting this and helping make Ubuntu better.
In order to allow additional upstream developers to examine the issue, at your earliest convenience, could you please test the latest upstream kernel available from http://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D ? Please keep in mind the following: 1) The one to test is at the very top line at the top of the page (not the daily folder). 2) The release names are irrelevant. 3) The folder time stamps aren't indicative of when the kernel actually was released upstream. 4) Install instructions are available at https://wiki.ubuntu.com/Kernel/MainlineBuilds . If testing on your main install would be inconvenient, one may: 1) Install Ubuntu to a different partition and then test this there. 2) Backup, or clone the primary install. If the latest kernel did not allow you to test to the issue (ex. you couldn't boot into the OS) please make a comment in your report about this, and continue to test the next most recent kernel version until you can test to the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this issue is fixed in the mainline kernel, please add the following tags by clicking on the yellow circle with a black pencil icon, next to the word Tags, located at the bottom of the report description: kernel-fixed-upstream kernel-fixed-upstream-X.Y-rcZ Where X, and Y are the first two numbers of the kernel version, and Z is the release candidate number if it exists. If the mainline kernel does not fix the issue, please add the following tags: kernel-bug-exists-upstream kernel-bug-exists-upstream-X.Y-rcZ Please note, an error to install the kernel does not fit the criteria of kernel-bug-exists-upstream. Also, you don't need to apport-collect further unless specifically requested to do so. It is most helpful that after testing of the latest upstream kernel is complete, you mark this report Status Confirmed. Lastly, to keep this issue relevant to upstream, please continue to test the latest mainline kernel as it becomes available. Thank you for your help. ** Tags removed: rtl8821ae ** Tags added: cecn43ww ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1622293 Title: rtl8821ae WiFI does not work on Ubuntu 16.04 Status in linux package in Ubuntu: Incomplete Bug description: 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1622293/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp