grub:

GRUB_DEFAULT=0
#GRUB_HIDDEN_TIMEOUT=0
GRUB_HIDDEN_TIMEOUT_QUIET=true
GRUB_TIMEOUT=10
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="nomodeset reboot=pci,force"
GRUB_CMDLINE_LINUX="linux (hd1,gpt2)/boot/vmlinuz-3.13.0-24-generic root=/dev/mmcblk0p2"