I just upgraded my machine from F29 to F30. Now, whenever I install a new kernel, the new
kernel does not automatically become the default. In other words, when I reboot, the
previous kernel is still chosen by grub2.
I can manually choose the new kernel in the grub2 menu, at which point it _does_ become
the new default. I don't wind up at the "grub>" prompt, so I think grub2
itself is fine. It is just that the grubenv is not updated when the new kernel is
installed.
The machine has UEFI, but the system boots using the legacy BIOS compatibility layer. I
know that the boot mechanism changed a bit for F30, but I'm not sure where to look to
identify the cause of this problem. It doesn't seem to be the same issue as described
in BZ 1652806.
Steve