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[Bug 1574622] Re: RTL8723AU No WiFi after reboot


Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.6 kernel[0].

If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag:

Once testing of the upstream kernel is complete, please mark this bug as

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.6-rc6-wily/

** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

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  RTL8723AU No WiFi after reboot

Status in linux package in Ubuntu:

Bug description:
  After rebooting the system, the wifi is not initialized correctly.
  dmesg lists [   14.132275] usb 2-5: Firmware failed to start

  However, after complete shutdown and startup the chip works just fine.

  I was using 14.04 before and this chip has always been kind of dodgy,
  requiring a kernel module from github for some time.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-21-generic 4.4.0-21.37 [modified: boot/vmlinuz-4.4.0-21-generic]
  ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
  Uname: Linux 4.4.0-21-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
   /dev/snd/controlC0:  enbewe     1685 F.... pulseaudio
   /dev/snd/controlC1:  enbewe     1685 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Mon Apr 25 14:34:09 2016
  HibernationDevice: RESUME=UUID=ca32a7cb-a574-4faf-9376-ab44bae3ac42
  InstallationDate: Installed on 2016-04-22 (2 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  MachineType: LENOVO 20246
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-21-generic.efi.signed root=UUID=dbed3725-2e1c-4a74-8594-6fd4cdb20e21 ro quiet splash vt.handoff=7
   linux-restricted-modules-4.4.0-21-generic N/A
   linux-backports-modules-4.4.0-21-generic  N/A
   linux-firmware                            1.157
  SourcePackage: linux
  StagingDrivers: r8723au
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 10/08/2013
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 8FCN36WW(V1.03)
  dmi.board.asset.tag: No Asset Tag
  dmi.board.name: Yoga2
  dmi.board.vendor: LENOVO
  dmi.board.version: 31900003STD
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Lenovo IdeaPad Yoga 11S
  dmi.modalias: dmi:bvnLENOVO:bvr8FCN36WW(V1.03):bd10/08/2013:svnLENOVO:pn20246:pvrLenovoIdeaPadYoga11S:rvnLENOVO:rnYoga2:rvr31900003STD:cvnLENOVO:ct10:cvrLenovoIdeaPadYoga11S:
  dmi.product.name: 20246
  dmi.product.version: Lenovo IdeaPad Yoga 11S
  dmi.sys.vendor: LENOVO

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