Once the system is up, you can track down the problem with the new kernel.

Install the new kernel into the boot directory, and enable its use with LILO or GRUB.

If there are problems building the new kernel, you can boot the saved version with these commands:

How often you have to build a new kernel depends greatly on which system you are administering.

Reboot the system using the new kernel.

Building a new kernel executable image

Then install and boot from the new kernel (a step that we won't detail at length here).

Any vendor nervy enough to put out new kernel drivers will have to do a pretty significant gut check.

If there is a problem with the new kernel, you can boot the saved kernel with a command like the following: