That indicates the bug is either already fixed in upstream 4.4.16 or it's an Ubuntu specific bug.
To confirm it's now fixed upstream, can you test 4.4.15. It should contain the bug, since Ubuntu 4.4.0-34 had those stable updates and not the 4.4.16 stable updates. The 4.4.15 kernel can be downloaded from: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.15/ Another testing option would be to test the Xenial -proposed kernel. Xenial -proposed now does have the v4.4.16 stable updates. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you in advance! -- 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/1611831 Title: Can't boot from new kernel 4.4.0-34. Old kernel 4.4.0-31 is fine. Status in linux package in Ubuntu: Confirmed Status in linux source package in Xenial: Confirmed Bug description: Greetings, I recently upgraded from the 4.4.0-31 to 4.4.0-34 kernel in Ubuntu 16.04. If I try booting from 4.4.0-34, my system freezes just after I enter my password to decrypt my hard-drive. If I ask it to boot from 4.4.0-31, everything is fine. My boot.log file: lvmetad is not active yet, using direct activation during sysinit Volume group "ubuntu-vg" not found Cannot process volume group ubuntu-vg /run/lvm/lvmetad.socket: connect failed: No such file or directory WARNING: Failed to connect to lvmetad. Falling back to internal scanning. Reading all physical volumes. This may take a while... Found volume group "ubuntu-vg" using metadata type lvm2 /run/lvm/lvmetad.socket: connect failed: No such file or directory WARNING: Failed to connect to lvmetad. Falling back to internal scanning. 2 logical volume(s) in volume group "ubuntu-vg" now active /dev/mapper/ubuntu--vg-root: recovering journal /dev/mapper/ubuntu--vg-root: clean, 525872/28426240 files, 91143613/113674240 blocks It's unclear to me what is going wrong. There appears to be no activity on the computer. I let the boot sequence sit for 10 minutes (way longer than an average boot time) my laptop's fan is running full-tilt. But there was no hard-drive activity. How can I find out what's going wrong? I'm running Ubuntu 16.04 Linux on a Lenovo W530. I'm not certain what other information would be helpful for a bug report. I would be happy to submit whatever is deemed helpful. --- ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: rybu 4449 F.... pulseaudio /dev/snd/controlC0: rybu 4449 F.... pulseaudio CurrentDesktop: Unity DistroRelease: Ubuntu 16.04 EcryptfsInUse: Yes HibernationDevice: RESUME=UUID=48cdbc4a-e07f-4aa4-bb23-e2904e1cd350 InstallationDate: Installed on 2016-04-26 (106 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) MachineType: LENOVO 2436CTO Package: linux (not installed) ProcFB: 0 nouveaufb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-31-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13 RelatedPackageVersions: linux-restricted-modules-4.4.0-31-generic N/A linux-backports-modules-4.4.0-31-generic N/A linux-firmware 1.157.2 Tags: xenial Uname: Linux 4.4.0-31-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm audio cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 09/18/2015 dmi.bios.vendor: LENOVO dmi.bios.version: G5ETA3WW (2.63 ) dmi.board.asset.tag: Not Available dmi.board.name: 2436CTO dmi.board.vendor: LENOVO dmi.board.version: Not Defined dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrG5ETA3WW(2.63):bd09/18/2015:svnLENOVO:pn2436CTO:pvrThinkPadW530:rvnLENOVO:rn2436CTO:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 2436CTO dmi.product.version: ThinkPad W530 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1611831/+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
