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n00b
Asked: 2012-12-28 12:37:47 +0800 CST

How do I downgrade kernel on 12.10?

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I did a fresh installation of Ubuntun 12.10 (kernel v3.5.0.21-generic, 64 bit, US English) on my computer after downloading the ISO from Ubuntu.com.

In order for one of my installed programs to work, I would like to downgrade the current kernel version to 3.2.0.24-generic

Questions:

  1. Is it advisable to downgrade the current kernet version to an older one?

  2. If the answer to (1) above is yes, how do I do it?

As always, detailed instructions on how to issue specific commands at the terminal window are welcome. I am new to Linux and Ubuntu.

Thanks in advance for your help.

12.10

1 Answers

  1. Best Answer

    Today I needed to downgrade from 3.5.0-24 to 3.5.0-23 (I have both installed). I succeded with the following:

    sudo /etc/kernel/postrm.d/zz-update-grub 3.5.0-23-generic /boot/vmlinuz-3.5.0-23-generic

    You can find out Your current kernel with:

    uname -a

    You can find out other kernels installed on Your computer with::

    dpkg -l 'linux-*' | sed '/^ii/!d;/'"$(uname -r | sed "s/\(.*\)-\([^0-9]\+\)/\1/")"'/d;s/^[^ ]* [^ ]* \([^ ]*\).*/\1/;/[0-9]/!d'

    Mind that You might also need to lock the version of the kernel -- so to prevent it automatic update.

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