The issue is not present in grub2-2.02~beta2-19 (latest version for 15.04 Vivid) Using one machine with test kernels, update-grub outputs:
Found linux image: /boot/vmlinuz-3.17.0-custom Found initrd image: /boot/initrd.img-3.17.0-custom Found linux image: /boot/vmlinuz-3.17.0-rc1-custom Found initrd image: /boot/initrd.img-3.17.0-rc1-custom Found linux image: /boot/vmlinuz-3.16.0-29-generic Found initrd image: /boot/initrd.img-3.16.0-29-generic … and grub2 lists 3.17.0-custom as the default kernel, not 3.17.0-rc1-custom. Based on the changelog, this was probably fixed in grub2-2.00-20: > * Backport from upstream: > - Sort gnumach kernels in version order (closes: #725451). > -- Colin Watson <cjwat...@debian.org> 14 Nov 2013 I will mark this as Incomplete as suggested by the canned responses: "13.10 reached EOL on 17 July 2014…Please upgrade to the latest version and re-test." ** Changed in: grub2 (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1247700 Title: default kernel order issue with RC and final versions To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1247700/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs