Works fine for Ubuntu:
1) in '/etc/default/grub' add 'GRUB_RECORDFAIL_TIMEOUT':
... GRUB_TIMEOUT=10 GRUB_RECORDFAIL_TIMEOUT=$GRUB_TIMEOUT ...
2) Update the grub config:
sudo update-grub2
Works fine for Ubuntu:
1) in '/etc/default/grub' add 'GRUB_RECORDFAI L_TIMEOUT' :
... _TIMEOUT= $GRUB_TIMEOUT
GRUB_TIMEOUT=10
GRUB_RECORDFAIL
...
2) Update the grub config:
sudo update-grub2