Download and install Linux Kernel 4.2.5 (Stable). Terminal commands to install Linux Kernel 4.2.5 on 32/64 bit Ubuntu and Ubuntu Derivatives.
If you aren’t sure which version of Linux Kernel you are using, you can run the “$ sudo uname -r” (without quotes; see screenshot below) command to find out the version of your kernel.
If you see anything at all after the dash, you are running a distribution kernel. Please use the support channels offered by your distribution vendor to obtain kernel support. Unless you downloaded, compiled and installed your own version of kernel from kernel.org, you are running a distribution kernel.
Install Linux Kernel 4.2.5
Linux Kernel 4.2.5 is the most stable version of Kernel, released recently. The Linux Kernel 4.2.5 can be downloaded and installed on Ubuntu 15.10, Ubuntu 14.04, Ubuntu 15.04, Ubuntu 14.10 and Ubuntu Derivatives (both – 32 bit and 64 bit Systems).
Linux 4.2.5 Changelog
Author: Greg Kroah-Hartman | Date: Tue Oct 27 09:53:59 2015 +0900
The server rdma_read_chunk_lcl() and rdma_read_chunk_frmr() functions were not taking into account the initial page_offset when determining the rdma read length. This resulted in a read who’s starting address and length exceeded the base/bounds of the frmr. The server gets an async error from the rdma device and kills the connection, and the client then reconnects and resends. This repeats indefinitely, and the application hangs.
Most work loads don’t tickle this bug apparently, but one test hit it every time: building the linux kernel on a 16 core node with ‘make -j 16 O=/mnt/0’ where /mnt/0 is a ramdisk mounted via NFSRDMA. This bug seems to only be tripped with devices having small fastreg page list depths. I didn’t see it with mlx4, for instance.
Download Linux Kernel 4.2.5 Stable (Tuesday 27 October 2015 06:24 AM)
- Kernel Version: 4.2.5 (stable)
- Source: linux-4.2.5.tar.xz
Terminal Commands to Install Linux Kernel 4.2.5
Run the following commands in Terminal to install Linux Kernel 4.2.5 on 32 bit Ubuntu and derivative systems:
$ cd /tmp
$ wget \
kernel.ubuntu.com/~kernel-ppa/mainline/v4.2.5-wily/linux-headers-4.2.5-040205_4.2.5-040205.201510270124_all.deb \
kernel.ubuntu.com/~kernel-ppa/mainline/v4.2.5-wily/linux-headers-4.2.5-040205-generic_4.2.5-040205.201510270124_i386.deb \
kernel.ubuntu.com/~kernel-ppa/mainline/v4.2.5-wily/linux-image-4.2.5-040205-generic_4.2.5-040205.201510270124_i386.deb
$ sudo dpkg -i linux-headers-4.2*.deb linux-image-4.2*.deb
Run the following commands in Terminal to install Linux Kernel 4.2.5 on 64 bit Ubuntu and derivative systems:
$ cd /tmp
$ wget \
kernel.ubuntu.com/~kernel-ppa/mainline/v4.2.5-wily/linux-headers-4.2.5-040205_4.2.5-040205.201510270124_all.deb \
kernel.ubuntu.com/~kernel-ppa/mainline/v4.2.5-wily/linux-headers-4.2.5-040205-generic_4.2.5-040205.201510270124_amd64.deb \
kernel.ubuntu.com/~kernel-ppa/mainline/v4.2.5-wily/linux-image-4.2.5-040205-generic_4.2.5-040205.201510270124_amd64.deb
$ sudo dpkg -i linux-headers-4.2*.deb linux-image-4.2*.deb
Uninstall Linux Kernel 4.2.5
If you wish to uninstall and remove the Linux Kernel 4.2.5 from Ubuntu Systems, run the following command.
$ sudo apt-get remove linux-headers-4.2* linux-image-4.2*
Please remember to update the system after you run the commands to remove the unused Kernel.