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My question is how can I reverse back to a kernel version. I have installed the brand new kernel version, that is 'Ubuntu, with Linux 3.4.0-30400, I did the correct procedure. How to Upgrade Kernel Version?. But when my machine booted with the new kernel, by the grub boot screen as I clicked, it does not load the operating system. It get's stuck at the boot process. After this event I went to a previous version, that was the default, 'Ubuntu, with Linux 3.2.0-39-generic kernel.' It works correctly. How can I get this working kernel to boot up in the first place kernel, and change the default kernel, to one that works. If you can please explain/instructions, I would appreciate it. Thank You Pictures Kernel Versions Kernel Boot

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Just remove the kernel packages you've installed manually. If not sure what to remove, please add the output of dpkg -l | grep -e linux-image -e linux-headers to the question. –  mikewhatever May 1 '13 at 3:37
    
Thank You for the help. The solution you gave me, did not fix the problem, it showed me all the kernel versions. Thanks for the help anyway. :) –  Ronnie Marlow May 1 '13 at 10:57
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2 Answers

sudo apt-get purge linux-{headers,image}-3.4.0-30400-generic linux-headers-3.4.0-30400
should remove it

if you would like to try a mainline kernel this makes it easy to install them
https://github.com/GM-Script-Writer-62850/Ubuntu-Mainline-Kernel-Updater#readme that installer can be used to make a un-installer also

KernelUpdateChecker -k -r precise -v 3.4
/tmp/kernel-upgrade --uninstall

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Did not fix my problem at all. But the information you gave me is useful. Thanks for the help. Hey do you think it's possible to restore my system with the old kernel version, do think this might fix the problem? To the 3.2.0-39 kernel, boot process. –  Ronnie Marlow May 1 '13 at 11:27
    
You said that the 3.4.0-30400 Kernel would not boot and you had to use the menu to boot a 3.2 kernel, right. You wanted to remove the 3.4 kernel, that 1st command would do just that once you boot a 3.2 kernel –  GM-Script-Writer-62850 May 1 '13 at 14:35
    
Thank you the information GM-Script-Writer-62850. The details you gave me were used, but did not work for my machine. The solution, toward my problem was with the program 'Grub Customizer'. It fixed my issue. Again thanks for all the help. :) –  Ronnie Marlow May 2 '13 at 19:44
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The solution to this problem, is by using the program 'Grub Customizer.'

enter image description here

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