rcrsn51 found the cause and solution here
Precise suffers from the same bug, missing cp-FULL. Though I haven't tried it, it seems gubconfig is broken at the woof level.
Code: Select all
# find / -name cp-FULL
# grep cp\-FULL `which grubconfig`
cp-FULL -p /usr/share/grub/*/*stage* $BOOT/grub 2>$TMP/null
cp-FULL -p /usr/local/share/grub/*/*stage* $BOOT/grub 2>$TMP/null
cp-FULL -p /usr/lib/grub/*/*stage* $BOOT/grub 2>$TMP/null