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[Andreas Olsson <andreas@xxxxxxxxxx>]

I too have a Lenovo Yoga Pro 2 running Ubuntu 14.04, and I too need to
rmmod/blacklist the ideapad_laptop module to get the wifi running.

Experience the exact same behavior while testing with the following
kernel: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.15-rc5-utopic
/linux-
image-3.15.0-031500rc5-generic_3.15.0-031500rc5.201405091635_amd64.deb

** Tags removed: kernel-unable-to-test-upstream

** Tags added: kernel-bug-exists-upstream

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

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https://bugs.launchpad.net/bugs/1318038

Title:
  8086:08b2 [Lenovo Yoga Pro 2] WiFi does not work if 'ideapad_laptop'
  module is loaded

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  After installing Ubuntu 14.04 on my shiny new Lenovo Yoga Pro 2, I
  didn't have any WiFi.

  WORKAROUND: rmmod ideapad_laptop WiFi

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-24-generic 3.13.0-24.46 [modified: boot/vmlinuz-3.13.0-24-generic]
  ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  ellen      1899 F.... pulseaudio
   /dev/snd/controlC0:  ellen      1899 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Fri May  9 12:34:07 2014
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2014-05-09 (0 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  MachineType: LENOVO 20266
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=ba31383e-fde6-4c70-aab4-09c0e0f3a17c ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-24-generic N/A
   linux-backports-modules-3.13.0-24-generic  N/A
   linux-firmware                             1.127
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 10/31/2013
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 76CN31WW
  dmi.board.asset.tag: No Asset Tag
  dmi.board.name: Yoga2
  dmi.board.vendor: LENOVO
  dmi.board.version: 31900058STD
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Lenovo Yoga 2 Pro
  dmi.modalias: dmi:bvnLENOVO:bvr76CN31WW:bd10/31/2013:svnLENOVO:pn20266:pvrLenovoYoga2Pro:rvnLENOVO:rnYoga2:rvr31900058STD:cvnLENOVO:ct10:cvrLenovoYoga2Pro:
  dmi.product.name: 20266
  dmi.product.version: Lenovo Yoga 2 Pro
  dmi.sys.vendor: LENOVO

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