Thread: Adding "clocksource=hpet" to your kernel command line with grub2

i've searched while on these forums , google haven't found answer on how edit #kopt= line in grub2.

i'm getting clocksource unstable tsc error after updating the latest bios motherboard. i've read couple of suggestions telling me add ""clocksource=hpet" kernel command line. kernel command line specified in /boot/grub/menu.lst @ line starting "# kopt=..."."

on grub2 menu.lst replaced grub.cfg. couldn't find #kopt line. there way edit/add line grub?

thanks.

as root, have edit config file /etc/default/grub .

should find line this:
grub_cmdline_linux_default="quiet splash"

add whatever commands need, this:
grub_cmdline_linux_default="quiet splash clocksource=hpet"

save changed file, , run command in console:
sudo update-grub

if check /boot/grub/grub.cfg now, should updated custom command.

more info here: https://help.ubuntu.com/community/gr...ing%20grub%202

hope helps.
have fun.

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