Jim, I only know the GUI way of doing it. I select all of the kernels above 4.15.xx and select remove, but only once I have booted up with the older kernel (once the GRUB menu appears, go into Advanced options and look for 4.15 and boot off of that, just don't select "(recovery mode)"), type "apt autoremove", but since you probably don't use the terminal logged in as root in it, type in "sudo apt autoremove" and it should automatically start configuring the packages that were not configured previously, a.k.a. the GRUB updates, open UKUU, install the latest available kernel, restart and enjoy!
Do note that I am using an HP laptop and that a previous GRUB update (a few months ago) enrolled new Secure Boot keys, which might affect the fact that I'm booting with unsigned kernels and Secure Boot on. Good luck and have a nice day! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1788727 Title: upgrade crashing due to unsigned kernels To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1788727/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
