I had similar issue with kernel 4.8.0-42. No Network connectivity after boot, even screen resolution was stuck in 4:3.
Had to go back on 4.8.0-41 and run 'sudo apt-get install linux-generic' that fixed everything Seems like the previous kernel upgrade failed. So, I scan the apt log to find some kernel upgrade errors: Selecting previously unselected package linux-image-4.8.0-42-generic. Preparing to unpack .../13-linux-image-4.8.0-42-generic_4.8.0-42.45_amd64.deb ... Examining /etc/kernel/preinst.d/ run-parts: executing /etc/kernel/preinst.d/intel-microcode 4.8.0-42-generic /boot/vmlinuz-4.8.0-42-generic Done. Unpacking linux-image-4.8.0-42-generic (4.8.0-42.45) ... Selecting previously unselected package linux-signed-image-4.8.0-42-generic. Preparing to unpack .../14-linux-signed-image-4.8.0-42-generic_4.8.0-42.45_amd64.deb ... Unpacking linux-signed-image-4.8.0-42-generic (4.8.0-42.45) ... Setting up linux-image-4.8.0-42-generic (4.8.0-42.45) ... Running depmod. update-initramfs: deferring update (hook will be called later) Examining /etc/kernel/postinst.d. run-parts: executing /etc/kernel/postinst.d/apt-auto-removal 4.8.0-42-generic /boot/vmlinuz-4.8.0-42-generic run-parts: executing /etc/kernel/postinst.d/dkms 4.8.0-42-generic /boot/vmlinuz-4.8.0-42-generic Error! Your kernel headers for kernel 4.8.0-42-generic cannot be found. Please install the linux-headers-4.8.0-42-generic package, or use the --kernelsourcedir option to tell DKMS where it's located Error! Your kernel headers for kernel 4.8.0-42-generic cannot be found. Please install the linux-headers-4.8.0-42-generic package, or use the --kernelsourcedir option to tell DKMS where it's located Error! Your kernel headers for kernel 4.8.0-42-generic cannot be found. Please install the linux-headers-4.8.0-42-generic package, or use the --kernelsourcedir option to tell DKMS where it's located Error! Your kernel headers for kernel 4.8.0-42-generic cannot be found. Please install the linux-headers-4.8.0-42-generic package, or use the --kernelsourcedir option to tell DKMS where it's located Not sure why this upgrade failed exactly, but running 'sudo apt-get install linux-generic' command seemed to allowed the previous upgrade to complete manually and fix eveything. Thank you for reporting Jerry, your report helped me quickly fix my system. Maybe this can help find the cause of the kernel issue your having. -- 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/1667968 Title: Ubuntu 16.10 kernel 4.8.0-39 No network connectivity Status in linux package in Ubuntu: Incomplete Bug description: My last kernel update changed something that is causing the network manager to fail to load anything but the lo device. If I reboot into the previous kernel (4.8.0-38) everything works fine. I'm not certain that this issue is related to the NetworkManger or the Kernel, but the bottom line is I have not ethernet when I boot using the latest kernel. This is one of three computers I built a few years back. It's based on an Asus motherboard: P5G41T-M LX PLUS, BIOS 0502 10/21/2011 The eth0 NIC is on the motherboard. Any info you need, I will try and provide. Any help you might offer would be appreciated. I run apt-get update followed by apt-get dist-upgrade every day. This is the first time I've had a serious problem as a byproduct of updating. --- ApportVersion: 2.20.3-0ubuntu8.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: jerry.lumpkins 5587 F.... pulseaudio DistroRelease: Ubuntu 16.10 HibernationDevice: RESUME=UUID=4c1c5e08-0209-47f6-8250-d5e9218964b4 InstallationDate: Installed on 2014-12-08 (813 days ago) InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1) IwConfig: lo no wireless extensions. eth0 no wireless extensions. MachineType: System manufacturer System Product Name NonfreeKernelModules: nvidia_uvm nvidia Package: linux (not installed) ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.8.0-38-generic root=UUID=58e4f4be-3dfc-4eaf-91b0-d70f9c1c7640 ro cgroup_enable=memory swapaccount=1 quiet splash ProcVersionSignature: Ubuntu 4.8.0-38.41-generic 4.8.17 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-4.8.0-38-generic N/A linux-backports-modules-4.8.0-38-generic N/A linux-firmware 1.161.1 RfKill: Tags: yakkety Uname: Linux 4.8.0-38-generic x86_64 UpgradeStatus: Upgraded to yakkety on 2016-10-23 (128 days ago) UserGroups: _MarkForUpload: True dmi.bios.date: 10/21/2011 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 0502 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: P5G41T-M LX PLUS dmi.board.vendor: ASUSTeK Computer INC. dmi.board.version: Rev X.0x dmi.chassis.asset.tag: Asset-1234567890 dmi.chassis.type: 3 dmi.chassis.vendor: Chassis Manufacture dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0502:bd10/21/2011:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5G41T-MLXPLUS:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion: dmi.product.name: System Product Name dmi.product.version: System Version dmi.sys.vendor: System manufacturer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1667968/+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
