I have a single OS install with Ubuntu 14.04.2 LTS on a digital kiosk, with no keyboard attached.
The kiosk reboot every night, but sometimes - rarely but it happends - the grub menu shows up, asking with no timeout to choose between :
- Advanced option for Ubuntu
- Memory test (memtest86+)
- Memory test (memtest86=, serial console 115200)
The only solution to boot the kiosk is then to attach a keyboard and press enter. There is my grub config :
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="quiet splash" GRUB_CMDLINE_LINUX=""
How can I totally prevent grub menu from showing up and force Ubuntu to boot ?
What could explain that the grub menu is shown from time to time ?