Caused by missing linux-image-extra-4.4.0-43, which was not upgraded together with the base kernel package.
-- 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/1633267 Title: Wifi, sound not detected when booting on 4.4.0-43 Status in linux package in Ubuntu: Confirmed Bug description: I'm running Ubuntu Gnome 16.04 on a Thinkpad T440p. On upgrading to 4.4.0-43 and rebooting the system didn't seem to recognize my Wifi or sound hardware: there was no Wifi icon or ability to connect to a network, and the only output on the sound menu was "Dummy Output." Rebooting into 4.4.0-42 solved the issue. --- ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: matt 3400 F.... pulseaudio /dev/snd/controlC1: matt 3400 F.... pulseaudio CurrentDesktop: GNOME DistroRelease: Ubuntu 16.04 EcryptfsInUse: Yes HibernationDevice: RESUME=UUID=29856bc8-3313-4425-95eb-a0afbc112423 InstallationDate: Installed on 2015-08-23 (417 days ago) InstallationMedia: Ubuntu-GNOME 15.04 "Vivid Vervet" - Release amd64 (20150422) MachineType: LENOVO 20ANCTO1WW Package: linux (not installed) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-42-generic.efi.signed root=UUID=18bf0a8f-3ce6-4c05-aff3-96f8da1e9ce5 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 4.4.0-42.62-generic 4.4.21 RelatedPackageVersions: linux-restricted-modules-4.4.0-42-generic N/A linux-backports-modules-4.4.0-42-generic N/A linux-firmware 1.157.4 Tags: xenial Uname: Linux 4.4.0-42-generic x86_64 UpgradeStatus: Upgraded to xenial on 2016-07-24 (81 days ago) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 08/18/2016 dmi.bios.vendor: LENOVO dmi.bios.version: GLET84WW (2.38 ) dmi.board.asset.tag: Not Available dmi.board.name: 20ANCTO1WW dmi.board.vendor: LENOVO dmi.board.version: 0B98405 STD dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrGLET84WW(2.38):bd08/18/2016:svnLENOVO:pn20ANCTO1WW:pvrThinkPadT440p:rvnLENOVO:rn20ANCTO1WW:rvr0B98405STD:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 20ANCTO1WW dmi.product.version: ThinkPad T440p dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1633267/+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