Updating headers in ubunta
Simply go to the sources and change the source to the Main Server.Changing this means that future downloads might be slightly slower, due to the main server being busier than a local one, but it should be more stable and have a longer up-time than local servers which can be occasionally patchy.The update process can take some time to complete and some steps may take longer than others.You can easily install the Linux kernel headers for currently running kernel version using the following commands at shell prompt.The optirun command is mainly used for graphic demanding programs (ex. A primary goal of this project is to not only enable use of the discrete GPU (d GPU) for rendering, but also to enable smart power management of the d GPU when it's not in use.We're using either bbswitch (a module) or vga_switcheroo (kernel module) to do this in Bumblebee.If this a PPA issue, then simply identify which of the PPAs is failing and remove it from sources.Do this as above by entering: This is another straightforward package error.
The easiest way to do this is by installing and running a package manager called "Ukuu", but you can also download and install manually the kernel files from the Ubuntu kernel web archive.
However, all releases are supported by the Bumblebee Project community from Ubuntu version 12.04 up to 14.04.