Ubuntu – What to do if I upgarde to the latest version and the only available kernel does not work

Ubuntu – What to do if I upgarde to the latest version and the only available kernel does not work

grub2kernelupgrade

So I have a 2005 one-core Acer, was great at the time but old now. Ubuntu has kept this thing moving forward working very well, however the latest two versions have been heavy on it. Most importantly the last one I downloaded worked relatively fine but as I installed updates and kernels those didn’t work.

Example:
Kernel 3.2 works fine but the newer 3.5 don’t even load up. My question is i I download the latest release and it gets rid of 3.2 and the new one doesn’t load up how would I manage getting an old kernel up on the GRUB or put in an older version of Ubuntu.

Thank you and sorry for being so novice at this.

Best Answer

  • Unless you manually deleted the old kernel, you will still have these on your machine.

    Hold down the Shift key as you boot up and it will take you to the Grub screen. From here, you can choose which version of the kernel to boot into.

    If you really don’t need the newer ones you can find which kernel you’re currently using by going to the terminal and running

    uname -r
    

    to see which kernel you’re using. Then run

    dpkg -l | grep linux-image
    

    and note the kernel versions you don’t need anymore (anything starting 3.5 I guess but if the kernel you’re running works fine, you can get read of all the others). Then you can run

    sudo apt-get purge linux-image-3.5.x-xx-generic
    

    That should free up some disk space for you too

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