Public bug reported: After upgraded from 10.10 to 11.04, the wifi was always shown disabled in NetworkManager no matter how I tried. It turned out that the acer-wmi module was wrongly loaded, and it had a rfkill bit that prevented NM from starting wifi interface.
The workaround is to blacklist acer-wmi on this Lenovo V470. A better fix is proposed in the following upstream report. Related upstream kernel bug report: https://bugzilla.kernel.org/show_bug.cgi?id=16570 ProblemType: Bug DistroRelease: Ubuntu 11.04 Package: linux-image-2.6.38-8-generic-pae 2.6.38-8.42 ProcVersionSignature: Ubuntu 2.6.38-8.42-generic-pae 2.6.38.2 Uname: Linux 2.6.38-8-generic-pae i686 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23. Architecture: i386 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: PCH [HDA Intel PCH], device 0: ALC272 Analog [ALC272 Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: maomao 1458 F.... pulseaudio /dev/snd/pcmC0D0p: maomao 1458 F...m pulseaudio CRDA: Error: [Errno 2] No such file or directory Card0.Amixer.info: Card hw:0 'PCH'/'HDA Intel PCH at 0xd0600000 irq 44' Mixer name : 'Intel CougarPoint HDMI' Components : 'HDA:10ec0272,17aa6012,00100001 HDA:80862805,80860101,00100000' Controls : 20 Simple ctrls : 10 Date: Mon May 2 16:30:53 2011 HibernationDevice: RESUME=UUID=b5ef491a-e48c-4d22-98c3-668cd857dff4 InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007) MachineType: LENOVO 20086,4396 ProcEnviron: LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-2.6.38-8-generic-pae root=UUID=034275ad-1261-4713-84d8-688dc2ff4484 ro quiet splash acpi_backlight=vendor vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-2.6.38-8-generic-pae N/A linux-backports-modules-2.6.38-8-generic-pae N/A linux-firmware 1.52 SourcePackage: linux UpgradeStatus: Upgraded to natty on 2011-05-02 (0 days ago) dmi.bios.date: 12/31/2010 dmi.bios.vendor: LENOVO dmi.bios.version: 43CN23WW dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: Emerald Lake dmi.board.vendor: LENOVO dmi.board.version: FAB1 dmi.chassis.asset.tag: Asset Tag dmi.chassis.type: 9 dmi.chassis.vendor: LENOVO dmi.chassis.version: 0.1 dmi.modalias: dmi:bvnLENOVO:bvr43CN23WW:bd12/31/2010:svnLENOVO:pn20086,4396:pvrLenovoV470:rvnLENOVO:rnEmeraldLake:rvrFAB1:cvnLENOVO:ct9:cvr0.1: dmi.product.name: 20086,4396 dmi.product.version: Lenovo V470 dmi.sys.vendor: LENOVO ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: apport-bug i386 natty running-unity -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/775414 Title: acer-wmi was loaded on a Lenovo Ideapad V470 (Intel Wireless-N 1000), causes problem with NetworkManager -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
