Ubuntu 11.04 has many known issues mentioned on its release notes. One post mentioned the issue of a bad interaction between Unity, the GL driver and the kernel, which often hangs the system. Updating the default 2.6.38-8 kernel can resolve such issues. In this post we will tell you how to update the Ubuntu 11.04 Kernel to 2.6.39-0.
Note: Once the Kernel is installed, you will require restarting the system for the changes to take effect, make sure you backup all your data before applying the below mentioned changes.
Open the Terminal and add the Kernel PPA (Personal Package Archive) by entering the following commands:
sudo add-apt-repository ppa:kernel-ppa/ppa sudo apt-get update
Check available Kernal by entering the below command. The 126.96.36.199 kernel should appear in the list.
apt-cache showpkg linux-headers
Finally, run this command to update your Kernel.
sudo apt-get install linux-headers-2.6.39-0 linux-headers-2.6.39-0-generic linux-image-2.6.39-0-generic --fix-missing
Restart your system for the changes to take effect. The system might become slow to respond during the restart, as the Kernel is updated.
To verify that the update has been successful, open System Monitor and head over to the System tab.