Upgrade the Linux kernel in Ubuntu...

I know, Ubuntu 9.10 comes with 'Update Manager', by default.
But, this can be helpful in case, one wish to upgrade/downgrade to the kernel of one's choice.

1. Check the current version of kernel on the system

user@localhost:~$ uname -a Linux localhost 2.6.31-20-generic #58-Ubuntu SMP Fri Mar 12 04:38:19 UTC 2010 x86_64 GNU/Linux

2. Search for the available supported kernels

user@localhost:~$ sudo apt-cache search linux-image linux-image - Generic Linux kernel image. linux-image-2.6.31-15-generic - Linux kernel image for version 2.6.31 on x86/x86_64 linux-image-2.6.31-15-server - Linux kernel image for version 2.6.31 on x86_64 linux-image-2.6.31-15-virtual - Linux kernel image for version 2.6.31 on x86/x86_64 linux-image-2.6.31-16-generic - Linux kernel image for version 2.6.31 on x86/x86_64 linux-image-2.6.31-16-server - Linux kernel image for version 2.6.31 on x86_64 linux-image-2.6.31-16-virtual - Linux kernel image for version 2.6.31 on x86/x86_64 linux-image-2.6.31-17-generic - Linux kernel image for version 2.6.31 on x86/x86_64 linux-image-2.6.31-17-server - Linux kernel image for version 2.6.31 on x86_64 linux-image-2.6.31-17-virtual - Linux kernel image for version 2.6.31 on x86/x86_64 linux-image-2.6.31-19-generic - Linux kernel image for version 2.6.31 on x86/x86_64 linux-image-2.6.31-19-server - Linux kernel image for version 2.6.31 on x86_64 linux-image-2.6.31-19-virtual - Linux kernel image for version 2.6.31 on x86/x86_64 linux-image-2.6.31-20-generic - Linux kernel image for version 2.6.31 on x86/x86_64 linux-image-2.6.31-20-server - Linux kernel image for version 2.6.31 on x86_64 linux-image-2.6.31-20-virtual - Linux kernel image for version 2.6.31 on x86/x86_64 linux-image-2.6.31-304-ec2 - Linux kernel image for version 2.6.31 on x86/x86_64 linux-image-2.6.31-305-ec2 - Linux kernel image for version 2.6.31 on x86/x86_64 linux-image-ec2 - Linux kernel image for ec2 machines linux-image-generic - Generic Linux kernel image linux-image-server - Linux kernel image on Server Equipment. linux-image-virtual - Linux kernel image for virtual machines alsa-base - ALSA driver configuration files linux-image-2.6.31-14-generic - Linux kernel image for version 2.6.31 on x86/x86_64 linux-image-2.6.31-14-server - Linux kernel image for version 2.6.31 on x86_64 linux-image-2.6.31-14-virtual - Linux kernel image for version 2.6.31 on x86/x86_64 linux-image-2.6.31-302-ec2 - Linux kernel image for version 2.6.31 on x86/x86_64 linux-image-2.6.31-9-rt - Linux kernel image for version 2.6.31 on Ingo Molnar's full real time preemption patch linux-image-rt - Rt Linux kernel image rt2400-source - source for rt2400 wireless network driver rt2500-source - source for rt2500 wireless network driver rt2570-source - source for rt2570 wireless network driver user@localhost:~$

3. Install the desired kernel

user@localhost:~$ sudo apt-get install linux-image-x.x.x-xx

..............Done!!!