This resulted in a unbootable system, so used a previous kernel from Ubuntu menu and then removed the offending kernel image.
Also i am using propriety Nvidia drivers, so that could be a cause as the kernel failed to install properly .
Preparing to install an upstream kernel
First, if one is using select proprietary or out-of-tree modules (ex. vitualbox, nvidia, fglrx, bcmwl, etc.) unless there is an extra package available for the version you are testing, you will need to uninstall the module first, in order to test the mainline kernel. If you do not uninstall these modules first, then the upstream kernel more than likely will not boot.
I tried using the following kernel as suggested from this link; kernel. ubuntu. com/~kernel- ppa/mainline/ v4.3-wily/
http://
http:// kernel. ubuntu. com/~kernel- ppa/mainline/ v4.3-wily/ linux-headers- 4.3.0-040300- generic_ 4.3.0-040300. 201511020949_ amd64.deb
http:// kernel. ubuntu. com/~kernel- ppa/mainline/ v4.3-wily/ linux-image- 4.3.0-040300- generic_ 4.3.0-040300. 201511020949_ amd64.deb
This resulted in a unbootable system, so used a previous kernel from Ubuntu menu and then removed the offending kernel image.
Also i am using propriety Nvidia drivers, so that could be a cause as the kernel failed to install properly .
Preparing to install an upstream kernel
First, if one is using select proprietary or out-of-tree modules (ex. vitualbox, nvidia, fglrx, bcmwl, etc.) unless there is an extra package available for the version you are testing, you will need to uninstall the module first, in order to test the mainline kernel. If you do not uninstall these modules first, then the upstream kernel more than likely will not boot.