I suspect this is entropy related, i.e. something in the entropy handling changed which causes things that use random numbers during the boot to slow down. The snapd team is also affected by this bug (snapd startup during boot became slow but when people press keys, move mouse things get better).
** Summary changed: - Bionic minimal image boot hang with linux-image-4.15.0-1012-kvm kernel + Boot delays with 4.15.0-24 based kernels -- 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/1779961 Title: Boot delays with 4.15.0-24 based kernels Status in linux package in Ubuntu: Triaged Bug description: We (Canonical CPC) are seeing an issue with today's build of the bionic minimal cloud images. Boot stops at "Starting Initial cloud- init job (metadata service crawler)..." for nearly 5 minutes (booting on scalingstack and locally with kvm) this is with a new kernel, but otherwise no changes over the prior image. Image (manifest and logs) exhibiting this behaviour @ https://private- fileshare.canonical.com/~philroche/bionic-minimal-20180703/ With server teams's help we have narrowed it down to "Synchronized to time server 91.189.91.157:123 (ntp.ubuntu.com)." taking over 4 minutes. On Kamal's instruction we also tried linux-kvm 4.15.0-1013.13 and bionic GA linux (4.15.0-24.26). Both of which also exhibit this regression. For reference: Kamal noted on IRC that the problem was possibly introduced in the GA kernel and is not specific to the kvm kernel. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1779961/+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
