Patch https://lkml.org/lkml/2015/11/21/57 seems to fix it. I cannot reproduce the issue after applying it (on top of 4.2.0-19 from GIT).
-- 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/1518259 Title: Wireless is disabled by rfkill after suspend with linux-image-generic- lts-wily Status in linux package in Ubuntu: Confirmed Bug description: I am running Ubunutu 14.04 on Dell Latitude E5450; Ubuntu came preinstalled on this notebook. After installing kernel linux- image-4.2.0-18-generic wireless is not available after resuming from suspend to RAM; in logs I see Nov 20 13:04:46 bor-Latitude-E5450 NetworkManager[1389]: <info> WiFi now disabled by radio killswitch This problem did not exist with original kernel linux-image-3.13.0-xx from 14.04 and updates. Probably related - original kernel is using iwlwifi driver Package: iwlwifi-3.16.2-dkms Status: install ok installed Priority: optional Section: misc Installed-Size: 65,6 MB Maintainer: Ubuntu Developers <ubuntu-devel-disc...@lists.ubuntu.com> Version: 1.0 Depends: dkms (>= 1.95) Original-Maintainer: Dynamic Kernel Modules Support Team <pkg-dkms-ma...@lists.alioth.debian.org> This driver does not compile for kernel 4.2. bor@bor-Latitude-E5450:~$ lsb_release -rd Description: Ubuntu 14.04.3 LTS Release: 14.04 --- ApportVersion: 2.14.1-0ubuntu3.19 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: bor 1910 F.... pulseaudio /dev/snd/pcmC1D0p: bor 1910 F...m pulseaudio /dev/snd/controlC1: bor 1910 F.... pulseaudio CurrentDesktop: Unity DistributionChannelDescriptor: # This is a distribution channel descriptor # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor canonical-oem-somerville-trusty-amd64-20140620-0 DistroRelease: Ubuntu 14.04 HibernationDevice: RESUME=UUID=df2037e2-aa56-4079-9f35-49d94d595d93 InstallationDate: Installed on 2015-07-02 (141 days ago) InstallationMedia: Ubuntu 14.04 "Trusty" - Build amd64 LIVE Binary 20140620-04:25 MachineType: Dell Inc. Latitude E5450 Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-18-generic root=UUID=d06b07a3-04bf-46e1-8cae-5f2592c69192 ro quiet splash pcie_aspm=force radeon.modeset=0 nouveau.modeset=0 video.use_native_backlight=1 video.use_native_backlight=1 crashkernel=384M-:128M vt.handoff=7 ProcVersionSignature: Ubuntu 4.2.0-18.22~14.04.1-generic 4.2.3 RelatedPackageVersions: linux-restricted-modules-4.2.0-18-generic N/A linux-backports-modules-4.2.0-18-generic N/A linux-firmware 1.127.18 Tags: trusty Uname: Linux 4.2.0-18-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm bumblebee cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 05/19/2015 dmi.bios.vendor: Dell Inc. dmi.bios.version: A07 dmi.board.name: 06J17N dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA07:bd05/19/2015:svnDellInc.:pnLatitudeE5450:pvr01:rvnDellInc.:rn06J17N:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: Latitude E5450 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1518259/+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
