I have a Yoga 2 Pro and I can confirm that the ideapad_laptop module in 3.17 rc6 is fixed. Can we look at backporting this module to the trusty kernel as a fix? Happy to help with testing or anything like that
Linux localhost 3.17.0-031700rc6-generic #201409211935 SMP Sun Sep 21 23:37:11 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux -- 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/1324095 Title: [Lenovo Yoga 2 Pro] ideapad_laptop kernel module breaks wireless Status in The Linux Kernel: Unknown Status in “linux” package in Ubuntu: Triaged Status in “linux” package in Fedora: Unknown Bug description: 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. 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 WORKAROUND: For the wireless network to work on my Lenovo Yoga 2 Pro Laptop I need blacklist/rmmod the ideapad_laptop kernel module. 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 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 To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1324095/+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
