- For kernel update
Then as root ( su - ) run this command
# update-kernel -t std-def
After kernel update reboot with new kernel .It is wise to keep older kernel in case the new kernel does not work you can boot back to older working kernel .
After kernel update you may update/resetup (especially for NVIDIA videocards) video driver by running this command as root
For Installing Nvidia driver run this command as root
# apt-get install kernel-modules-nvidia-$flavour