I'm not sure if my issue is related: I upgraded to 4.15.0-24 yesterday (no other updates) and this morning I get a blank screen on boot that sits there indefinitely (i.e. minutes).
To fix this, I CTRL-ALT-F6 to get another tty, which immediately show up. This however seems to trigger some event, as the graphical login appears (displaces) my tty6 terminal without my intervention. So I can reliably get the graphical login back by "playing" with tty6. One thing I noticed during boot was the `nvidia-persistenced` (using Nvidia's proprietary 390 drivers) service doing a dozen start/stops in quick succession. This doesn't show up every time though, and the blank screen that follows prevents me from seeing more. `snapd.service` and `unbound.service` appear as the main offenders, but I'm not sure what's cause and effect here. Booting with the prior 4.15.0-23 kernel works fine, as before. ** Attachment added: "output of: systemd-analyze critical-chain" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1779827/+attachment/5159551/+files/critical-chain-23-vs-24.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1779827 Title: failure to boot with linux-image-4.15.0-24-generic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1779827/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs