I have monitor DELL u2412m, on my machine Ubuntu 14.04 and Windows 8.1 are installed. BURG didn't work, I wanted to fix it, but with no luck, instead I messed that up and computer just rebooted again and again. I reinstalled grub 2 using Live CD, without burg, and now during boot I don't get BIOS load screen and after that grub menu, but all I can see is some info "The current input timing is not supported. Change your input timing to 1920x1200@60Hz...", so I used Grub customizer and set custom resolution to all available resolutions for my monitor I found on Windows listed and these are: 1920x1200, 1680x1050, 1280x800 and finally 1024x768, but with no luck. Now when I want to go to Linux, I have to wait for beep sound and after a second or two, I blindly navigate with arrow to Linux and type Enter(Windows is listed as first on the list, because of my family).

My /etc/default/grub looks like this:

# 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`"

# 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"


Can anyone help me with this?

Thanks, Deveti


I have read many blogs that says this problem is specific for the DELL laptops , so the below might help you to get out the problem.

Have you tried this steps :

  1. Hold the power button for 8+ seconds to reboot the pc.
  2. Tap F8 key, until you see boot diagnostics menu
  3. You will find Enable VGA mode , please select.
  • I restarted computer and just pressed F8 and get BIOS loading screen and GRUB menu. Thanks a lot! – Draško Jun 14 '15 at 16:57
  • I am glad i could help you :) – chanakya devraj Jun 15 '15 at 6:42

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