I recently upgraded Ubuntu from 12.04 to 12.10 and since that time, the system does not automatically boot. It always opens the boot menu, and I have to press Enter to make it boot Ubuntu.
It seems to be ignoring the timeout value, and using a 'neverending' timeout.
There are no other systems (no dual boot), only the options originally installed by default Ubuntu 12.04 installation.
/etc/default/grub has only these effective options:
GRUB_DEFAULT='Ubuntu' GRUB_HIDDEN_TIMEOUT=1 GRUB_HIDDEN_TIMEOUT_QUIET=true GRUB_TIMEOUT=1 GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian` GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" GRUB_CMDLINE_LINUX="" GRUB_TERMINAL=console
I experimented with
GRUB_DEFAULT, giving it values '0', '1', 'Ubuntu' but nothing helps.
Yes I always run
How can I make the system booting again ?