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clocksource=jiffies

asked 2013-03-27 10:20:23 -0500

Hello all!

I have an Fujitsu Siemens laptop, Amilo-series. Because fedora will freeze when i don't use keys or the mouse, i need to add the parameter 'clocksource=jiffies' to grub to boot the kernel. So, my problem is, that if fedora updates the kernel, it could be, that the parameter-setting could be lost, if the parameter is placed in the wrong file. Where is the correct file/place to add this parameter? My goal is to set this once and not to remember, everytime i update the kernel, to configure something in grub.

Greetings!

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answered 2013-03-27 15:39:28 -0500

hhlp gravatar image

1.- Edit the file /etc/default/grub

sudo nano /etc/default/grub

and in this command GRUB_CMDLINE_LINUX, at the end of the line add this:

clocksource=jiffies

This is the result:

GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"
GRUB_DEFAULT=saved
GRUB_CMDLINE_LINUX="rd.lvm.lv=fedora/swap rd.md=0 rd.dm=0 vconsole.keymap=es $([ -x /usr/sbin/rhcrashkernel-param ] && /usr/sbin/rhcrashkernel-param || :) rd.luks=0 rd.lvm.lv=fedora/root rhgb quiet clocksource=jiffies"
GRUB_DISABLE_RECOVERY="true"
GRUB_GFXMODE=1024x768
GRUB_THEME="/boot/grub2/themes/system/theme.txt"

and then generate the GRUB menu again:

sudo grub2-mkconfig -o /boot/grub2/grub.cfg
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answered 2013-03-27 12:17:11 -0500

ThomasMcA gravatar image

updated 2013-03-28 09:08:21 -0500

Put that setting in /etc/default/grub, at the end of the GRUB_CMDLINE_LINUX line. I have several custom settings on that line, and they do not have to be re-applied when the system updates the kernel.

After manually changing /etc/default/grub, run this command to implement the changes:

sudo grub2-mkconfig -o /boot/grub2/grub.cfg
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Asked: 2013-03-27 10:20:23 -0500

Seen: 1,567 times

Last updated: Mar 28 '13