I built a 4.15.0-35 test kernel. The test kernel can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1792100
Can you test this kernel and see if it resolves this bug? Note about installing test kernels: • If the test kernel is prior to 4.15(Bionic) you need to install the linux-image and linux-image-extra .deb packages. • If the test kernel is 4.15(Bionic) or newer, you need to install the linux-modules, linux-modules-extra and linux-image-unsigned .deb packages. Thanks in advance! ** Changed in: linux (Ubuntu) Importance: Undecided => High ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete ** Tags added: kernel-key -- 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/1792134 Title: Upgrading to 4.15.0-33 caused the system to fail to boot Status in linux package in Ubuntu: Incomplete Bug description: A routine upgrade upgraded the kernel to 4.15.0-34 upon which the machine would not boot and instead booted to initramfs. Attempts to boot into recovery mode resulted in the error "Warning failed to connect to lvmetad. Falling back to device scanning." Reverting to 4.15.0-33 allowed me to boot. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-4.15.0-33-generic 4.15.0-33.36 ProcVersionSignature: Ubuntu 4.15.0-33.36-generic 4.15.18 Uname: Linux 4.15.0-33-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: connor 4127 F.... pulseaudio CurrentDesktop: ubuntu:GNOME Date: Wed Sep 12 12:30:06 2018 HibernationDevice: RESUME=UUID=af5bdbd9-e688-4d55-a263-0d649f9b59d4 InstallationDate: Installed on 2018-07-23 (51 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) MachineType: LENOVO 20HNS1KE00 ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_GB.UTF-8 SHELL=/bin/bash ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-33-generic root=/dev/mapper/ubuntu--vg-root ro recovery nomodeset RelatedPackageVersions: linux-restricted-modules-4.15.0-33-generic N/A linux-backports-modules-4.15.0-33-generic N/A linux-firmware 1.173.1 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 03/20/2018 dmi.bios.vendor: LENOVO dmi.bios.version: R0IET52W (1.30 ) dmi.board.asset.tag: Not Available dmi.board.name: 20HNS1KE00 dmi.board.vendor: LENOVO dmi.board.version: SDK0J40697 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrR0IET52W(1.30):bd03/20/2018:svnLENOVO:pn20HNS1KE00:pvrThinkPadX270:rvnLENOVO:rn20HNS1KE00:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone: dmi.product.family: ThinkPad X270 dmi.product.name: 20HNS1KE00 dmi.product.version: ThinkPad X270 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1792134/+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