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Because of the high power usage I'd like to downgrade my kernel in Ubuntu 11.10 to the version used in 10.10 or 11.04. How can I do that and won't it cause any problems?

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Related:… – Adobe Feb 13 '13 at 11:32
up vote 19 down vote accepted

How can I do...

You could download the kernel binaries from the old or new Ubuntu releases /1/.

Ubuntu Packages Search:

Picking natty-updates kernel linux-image-2.6.38-10-generic :

Downloading it and installing with the command:

sudo dpkg -i linux-image-2.6.38-10-generic_2.6.38-10.46_i386.deb

Package management is telling:

Selecting previously deselected package linux-image-2.6.38-10-generic.
(Reading database ... 127436 files and directories currently installed.)
Unpacking linux-image-2.6.38-10-generic (from linux-image-2.6.38-10-generic_2.6.38-10.46_i386.deb) ...
Setting up linux-image-2.6.38-10-generic (2.6.38-10.46) ...
Running depmod.
update-initramfs: deferring update (hook will be called later)
Examining /etc/kernel/postinst.d.
run-parts: executing /etc/kernel/postinst.d/initramfs-tools 2.6.38-10-generic /boot/vmlinuz-2.6.38-10-generic
update-initramfs: Generating /boot/initrd.img-2.6.38-10-generic
run-parts: executing /etc/kernel/postinst.d/pm-utils 2.6.38-10-generic /boot/vmlinuz-2.6.38-10-generic
run-parts: executing /etc/kernel/postinst.d/update-notifier 2.6.38-10-generic /boot/vmlinuz-2.6.38-10-generic
run-parts: executing /etc/kernel/postinst.d/zz-update-grub 2.6.38-10-generic /boot/vmlinuz-2.6.38-10-generic
Generating grub.cfg ...
Found background image: /lib/plymouth/themes/my-plymouth/my-wallpaper.png
Found linux image: /boot/vmlinuz-3.0.0-12-generic
Found initrd image: /boot/initrd.img-3.0.0-12-generic
Found linux image: /boot/vmlinuz-2.6.38-10-generic
Found initrd image: /boot/initrd.img-2.6.38-10-generic
Found memtest86+ image: /boot/memtest86+.bin
Found Microsoft Windows XP Professional on /dev/sda1
Found Ubuntu 10.10 (10.10) on /dev/sdd1


Picking from the grub > Previous Linux versions > Kernel 2.6.38-10

...and the (K)Ubuntu is telling that i'm running with the 2.6.38-10-generic /2/.

enter image description here

...won't it cause any problems?

Well ;) you could tell us...


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Thanks, the lucid kernel killed my wifi, but the natty one works just fine. – Borsook Oct 25 '11 at 6:32
Thanks for this. I've downgraded and the horrible regression bug that bit me in Oneiric is gone with no apparent side effects. +1 – Scott Severance Nov 3 '11 at 3:14
I have downgraded it to 2.6.38 as well. Working almost fine. And battery life increased by atleast 50 mins. So I shall use this kernel whenever I need more battery power :) Thanks for the post. – mac Dec 18 '11 at 14:12
might wanna add you need linux-headers for dkms so be sure to install them before the image.. – Alex R Jul 24 '13 at 13:15

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