1. Download the relevant kernel package
Ubuntu website Linux kernel repository: http://kernel.ubuntu.com/~kernel-ppa/mainline/
Download the following three Deb packages:
$ wget-c Http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.1-rc1-vivid/linux-headers-4.1.0-040100rc1-generic_ 4.1.0-040100rc1.201504270235_amd64.deb
$ wget-c Http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.1-rc1-vivid/linux-image-4.1.0-040100rc1-generic_ 4.1.0-040100rc1.201504270235_amd64.deb
$ wget-c http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.1-rc1-vivid/linux-headers-4.1.0-040100rc1_ 4.1.0-040100rc1.201504270235_all.deb
2. Install the 3 Deb packages
The installation command is as follows (copy the following command directly):
$ sudo dpkg -i linux-headers-4.1.0-040100rc1_4.1.0-040100rc1.201504270235_all.deb linux-headers-4.1.0-040100rc1-generic_4.1.0-040100rc1.201504270235_amd64.deb linux-image-4.1.0-040100rc1-generic_4.1.0-040100rc1.201504270235_amd64.deb
is complete, restart the computer to take effect.
3. Verify that the Linux kernel upgrade is successful
Type the following command
$ uname -r
For example, the Linux kernel upgrade succeeds.
64-bit ubuntu15.04 upgrade the Linux kernel to linux4.1.0