I removed the pointer to the ckt/unstable ppa and purged all of the 4.18 kernels. I then installed the latest 4.17 kernel from -updates. That kernel, 4.17.0-9.10 now boots just fine with secure boot enabled. It looks like I did have more kernels installed from the ckt ppas than I thought I had.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1789918 Title: /boot/vmlinux-4.17 has invalid signature To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1789918/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
