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I want my computer automatically boot my Ubuntu system. But it always starts with this list:

Linux 3.2.0-57-generic-pae
Linux 3.2.0-57-generic-pae (recovery mode)
Linux Privous
Memory test (memtest86+)

I want my computer to automatically boot into Linux 3.2.0-57-generic-pae.

This is my /etc/default/grub file:

# If you change this file, run 'update-grub' afterwards to update
# /boot/grub/grub.cfg.
# For full documentation of the options in this file, see:
#   info -f grub -n 'Simple configuration'

GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash mem=4G video=LVDS-1:d"

# Uncomment to enable BadRAM filtering, modify to suit your needs
# This works with Linux (no patch required) and with any kernel that obtains
# the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...)

# Uncomment to disable graphical terminal (grub-pc only)

# The resolution used on graphical terminal
# note that you can use only modes which your graphic card supports via VBE
# you can see them in real GRUB with the command `vbeinfo'

# Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux

# Uncomment to disable generation of recovery mode menu entries

# Uncomment to get a beep at grub start
#GRUB_INIT_TUNE="480 440 1"
share|improve this question
Does this help? – Wilf Dec 31 '13 at 7:05
Does that link help? Look at the duplicate as well. – Wilf Jan 2 '14 at 9:27

Run this:

sudo nano /etc/default/grub

and set this line to saved, and remove any # from it as well:


also, set this line to true:


If these lines are not in the file, add them in.

Edit: To get rid of GRUB completely, set this to 0:


but as it is sometimes useful for GRUB to be shown, to recover the system, or boot to a different kernel, you may want to set this to 1 or 2 seconds:


you could also hide the menu unless a key is pressed during the 2 seconds time period:


Then save with Ctrl+O, and exit with Ctrl+X.

Then run:

sudo update-grub

which will update the configuration. Now, it should automatically select as default the entry you selected previously, and disappear after a timed delay, and hide if you wish it.

More on editing grub here

share|improve this answer
Depening on your approach, I still didn't solve the problem. Thank you. – Jeffrey Dec 31 '13 at 8:34
It is still not work out. – Jeffrey Jan 2 '14 at 1:49
Try sudo grub-reboot 0 command on terminal. – Avinash Raj Jan 2 '14 at 12:05

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