How to change kernel at boot [duplicate]

Solution 1:

From the https://help.ubuntu.com/community/Grub2

You can change which kernel grub boots to during the computers start-up.

As the computer starts up.

Hold down SHIFT to display the menu during boot. In certain cases, pressing the ESC key may also display the menu.

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You should now see the the grub menu. Use the arrow keys to navigate to the advanced options and choose the kernal you want to boot.

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Or try the ubuntu community documentation here. https://help.ubuntu.com/community/Grub2/Setup#Configuring_GRUB_2

This is from THIS post by nelaarThen follow the instructions in this post to fix the menu entry.

You can install Grub Customizer by:

sudo add-apt-repository ppa:danielrichter2007/grub-customizer
sudo apt-get update
sudo apt-get install grub-customizer

and change the position of entries in the Grub menu. From this you can choose to make the latest kernal as the default entry.