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[Mikaela Suomalainen <mikaela@xxxxxxxxxxxx>]

> Did this issue start happening after an update/upgrade? Was there a
prior kernel version where you were not having this particular problem?

I performed clean install of Ubuntu MATE 16.04 and the issue was present
with the daily image on 2015-12-12.

> Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.4 kernel[0]

I will try, even if I am running 16.04 and not 15.10, but from what I
understood it won't remove the current kernel.

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https://bugs.launchpad.net/bugs/1526683

Title:
  rtl8821ae has no connection on 5GHz networks and loses connection
  occassionally on 2.4 GHz networks requiring hardware button to be
  toggled twice for connection to be re-established

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  rtl8821ae has no connection on 5GHz networks and loses connection
  occassionally on 2.4 GHz networks requiring hardware button to be
  toggled twice for connection to be re-established

  I am not fully sure that this is the right package to report this bug
  against, but it's the best idea I have and no one replied when I asked
  where I should report this on two IRC channels.

  I took the name of driver from inxi:

  
  ```
  Network:   Card-1 ♥ Realtek RTL8821AE 802.11ac PCIe Wireless Network Adapter
             driver ♥ rtl8821ae port ♥ d000
             bus-ID ♥ 03:00.0 chip-ID ♥ 10ec:8821
             Card-2 ♥ Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
             driver ♥ r8169 v ♥ 2.3LK-NAPI port ♥ c000
             bus-ID ♥ 04:00.1 chip-ID ♥ 10ec:8168
  ```

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.3.0-2-generic 4.3.0-2.11 [modified: boot/vmlinuz-4.3.0-2-generic]
  ProcVersionSignature: Ubuntu 4.3.0-2.11-generic 4.3.0
  Uname: Linux 4.3.0-2-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.19.3-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  mikaela    1361 F.... pulseaudio
   /dev/snd/controlC1:  mikaela    1361 F.... pulseaudio
  CurrentDesktop: MATE
  Date: Wed Dec 16 11:35:09 2015
  HibernationDevice: RESUME=UUID=431ec214-73ef-4058-b283-5721bb5a45d2
  InstallationDate: Installed on 2015-12-12 (3 days ago)
  InstallationMedia: Ubuntu-MATE 16.04 LTS "Xenial Xerus" - Alpha amd64 (20151212)
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 003: ID 0bda:57b4 Realtek Semiconductor Corp. 
   Bus 001 Device 006: ID 13d3:3414 IMC Networks 
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: ASUSTeK COMPUTER INC. X550JX
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.3.0-2-generic.efi.signed root=UUID=ab0e7270-40bc-4a68-a541-59fd96690354 ro rw acpi_osi=
  RelatedPackageVersions:
   linux-restricted-modules-4.3.0-2-generic N/A
   linux-backports-modules-4.3.0-2-generic  N/A
   linux-firmware                           1.154
  SourcePackage: linux
  UdevLog: Error: [Errno 2] Tiedostoa tai hakemistoa ei ole: '/var/log/udev'
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 05/07/2015
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: X550JX.204
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: X550JX
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: ATN12345678901234567
  dmi.chassis.type: 10
  dmi.chassis.vendor: ASUSTeK COMPUTER INC.
  dmi.chassis.version: 1.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrX550JX.204:bd05/07/2015:svnASUSTeKCOMPUTERINC.:pnX550JX:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnX550JX:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
  dmi.product.name: X550JX
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK COMPUTER INC.

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