When I boot, but specify the other partition (also Lubuntu 18.04.2) - the one that originally started having the boot problems - it boots successfully.
When I boot, but specify the originally-installed kernel (linux- image-4.15.0-20-generic), it also boots successfully. Sometimes, on the boots that fail, it just hangs, and I have to hold down the power button to turn it off. It appears, that after initially powering on, and just booting from the first GRUB menu entry, it always fails in some manner the first time. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1833018 Title: After Installing Updates, system fails to boot on first try To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1833018/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs