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[Andreas Olsson <andreas@xxxxxxxxxx>]

Public bug reported:

For the wireless network to work on my Lenovo Yoga 2 Pro Laptop I need
blacklist/rmmod the ideapad_laptop kernel module. With the
ideapad_laptop  module loaded there is no wlan0 (or other wifi device)
present.

Booting without any explicit blacklist config the ideapad_laptop kernel
module gets loaded, and there are no wlan0 device present. Running rmmod
on the module results in the wlan0 device becoming present, and
NetworkManager being able to connect to a local wifi network. Here is
the dmesg output after the rmmod command.

[   74.908411] iwlwifi 0000:01:00.0: L1 Disabled; Enabling L0S
[   74.908627] iwlwifi 0000:01:00.0: L1 Disabled; Enabling L0S
[   74.920538] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[   76.371036] wlan0: authenticate with d8:5d:4c:bb:1a:f2
[   76.372069] wlan0: send auth to d8:5d:4c:bb:1a:f2 (try 1/3)
[   76.376670] wlan0: authenticated
[   76.378169] wlan0: associate with d8:5d:4c:bb:1a:f2 (try 1/3)
[   76.381908] wlan0: RX AssocResp from d8:5d:4c:bb:1a:f2 (capab=0x411 status=0 aid=2)
[   76.383305] wlan0: associated
[   76.383333] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready

If I yet again load the ideapad_laptop module, using modprobe, the wlan0
device goes away. Here is the dmesg output from that.

[  234.351406] input: Ideapad extra buttons as /devices/platform/VPC2004:00/input/input17
[  234.353261] wlan0: deauthenticating from d8:5d:4c:bb:1a:f2 by local choice (reason=3)
[  234.398900] cfg80211: Calling CRDA to update world regulatory domain
[  234.401410] cfg80211: World regulatory domain updated:
[  234.401412] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[  234.401414] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[  234.401415] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[  234.401416] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[  234.401418] cfg80211:   (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[  234.401419] cfg80211:   (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[  234.555068] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-27-generic 3.13.0-27.50
ProcVersionSignature: Ubuntu 3.13.0-27.50-generic 3.13.11
Uname: Linux 3.13.0-27-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC1:  andreas    2492 F.... pulseaudio
 /dev/snd/controlC0:  andreas    2492 F.... pulseaudio
CurrentDesktop: Unity
Date: Wed May 28 14:00:22 2014
EcryptfsInUse: Yes
InstallationDate: Installed on 2014-05-20 (8 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
MachineType: LENOVO 20266
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-27-generic.efi.signed root=UUID=e70835c5-4ffe-49d3-aecc-403dbf538c1a ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.13.0-27-generic N/A
 linux-backports-modules-3.13.0-27-generic  N/A
 linux-firmware                             1.127.2
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: 31900056PRO
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:rvr31900056PRO:cvnLENOVO:ct10:cvrLenovoYoga2Pro:
dmi.product.name: 20266
dmi.product.version: Lenovo Yoga 2 Pro
dmi.sys.vendor: LENOVO

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


** Tags: amd64 apport-bug trusty

-- 
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https://bugs.launchpad.net/bugs/1324095

Title:
  ideapad_laptop kernel module breaks wireless on Lenovo Yoga 2 Pro
  Laptop

Status in “linux” package in Ubuntu:
  New

Bug description:
  For the wireless network to work on my Lenovo Yoga 2 Pro Laptop I need
  blacklist/rmmod the ideapad_laptop kernel module. With the
  ideapad_laptop  module loaded there is no wlan0 (or other wifi device)
  present.

  Booting without any explicit blacklist config the ideapad_laptop
  kernel module gets loaded, and there are no wlan0 device present.
  Running rmmod on the module results in the wlan0 device becoming
  present, and NetworkManager being able to connect to a local wifi
  network. Here is the dmesg output after the rmmod command.

  [   74.908411] iwlwifi 0000:01:00.0: L1 Disabled; Enabling L0S
  [   74.908627] iwlwifi 0000:01:00.0: L1 Disabled; Enabling L0S
  [   74.920538] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
  [   76.371036] wlan0: authenticate with d8:5d:4c:bb:1a:f2
  [   76.372069] wlan0: send auth to d8:5d:4c:bb:1a:f2 (try 1/3)
  [   76.376670] wlan0: authenticated
  [   76.378169] wlan0: associate with d8:5d:4c:bb:1a:f2 (try 1/3)
  [   76.381908] wlan0: RX AssocResp from d8:5d:4c:bb:1a:f2 (capab=0x411 status=0 aid=2)
  [   76.383305] wlan0: associated
  [   76.383333] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready

  If I yet again load the ideapad_laptop module, using modprobe, the
  wlan0 device goes away. Here is the dmesg output from that.

  [  234.351406] input: Ideapad extra buttons as /devices/platform/VPC2004:00/input/input17
  [  234.353261] wlan0: deauthenticating from d8:5d:4c:bb:1a:f2 by local choice (reason=3)
  [  234.398900] cfg80211: Calling CRDA to update world regulatory domain
  [  234.401410] cfg80211: World regulatory domain updated:
  [  234.401412] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
  [  234.401414] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
  [  234.401415] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
  [  234.401416] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
  [  234.401418] cfg80211:   (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
  [  234.401419] cfg80211:   (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
  [  234.555068] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-27-generic 3.13.0-27.50
  ProcVersionSignature: Ubuntu 3.13.0-27.50-generic 3.13.11
  Uname: Linux 3.13.0-27-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  andreas    2492 F.... pulseaudio
   /dev/snd/controlC0:  andreas    2492 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Wed May 28 14:00:22 2014
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2014-05-20 (8 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  MachineType: LENOVO 20266
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-27-generic.efi.signed root=UUID=e70835c5-4ffe-49d3-aecc-403dbf538c1a ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-27-generic N/A
   linux-backports-modules-3.13.0-27-generic  N/A
   linux-firmware                             1.127.2
  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: 31900056PRO
  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:rvr31900056PRO:cvnLENOVO:ct10:cvrLenovoYoga2Pro:
  dmi.product.name: 20266
  dmi.product.version: Lenovo Yoga 2 Pro
  dmi.sys.vendor: LENOVO

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