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?
How can I do...
You could download the kernel binaries from the old or new Ubuntu releases /1/.
Ubuntu Packages Search: http://packages.ubuntu.com
Picking natty-updates kernel linux-image-2.6.38-10-generic : http://packages.ubuntu.com/natty-updates/linux-image
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) ... Done. 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 done
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/.
...won't it cause any problems?
Well ;) you could tell us...
1Thanks, the lucid kernel killed my wifi, but the natty one works just fine.– BorsookOct 25, 2011 at 6:32
1Thanks for this. I've downgraded and the horrible regression bug that bit me in Oneiric is gone with no apparent side effects. +1 Nov 3, 2011 at 3:14
1I 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.– macDec 18, 2011 at 14:12
might wanna add you need linux-headers for dkms so be sure to install them before the image..– Alex RJul 24, 2013 at 13:15