Tried building 5.14.14 from vanilla upstream https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.14.14.tar.xz using the config from ubuntu mainline config-5.14.14-051414-generic but removing the debian "pem" for a custom kernel build; and... It fails to boot after grub for ivybridge and haswell machines.
I will try disabling "CONFIG_UBSAN_TRAP" to see if that works. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1942684 Title: Kernel 5.14.X / 5.13.14 fails to boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1942684/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs