I need to add some custom boot options to grub (namely video=VGA-1:1366x768@6 to manage a 2nd monitor). Unfortunately this option is lost everytime a new kernel is installed. Is there a way to set an option so that the kernel update postinst applies to each entry ?

2 Answers 2


You can add your custom kernel option for grub in file "/etc/default/grub" in line "GRUB_CMDLINE_LINUX_DEFAULT".


It was quite easy actually : you can set

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i915.alpha_support=1 video=VGA-1:1366x768@60"

in /etc/default/grub.

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