Tuesday, December 25, 2012

Upgrading Linux Kernel 3.7.1 (Stable) release in Ubuntu 12.10

Linux kernel 3.7.1 has recently released on December 17, 2012 with lots of bugfixes and improvements.

The changelog contains all the improvements and bugfixes made in the kernel.

Below mentioned are some important fixes and improvements.

* USB: EHCI: bugfix: urb->hcpriv should not be NULL
* ring-buffer: Fix race between integrity check and readers
    * Partial fix for a hardware bug affecting OHCI controllers by NVIDIA
    * rcu: Fix batch-limit size problem
    * usb: ftdi_sio: fixup BeagleBone A5+ quirk
    * x86: hpet: Fix masking of MSI interrupts
    * clk: ux500: fix bit error
    * rcu: Fix batch-limit size problem

We shall upgrade the default kernel version 3.5.0-17.28 shipped with Ubuntu 12.10 to 3.7.1-030701.

Download the script to perform an automated kernel upgrade process.

Now open the terminal and run the below command from the folder where script is downloaded to make it executable.
$ sudo chmod +x ker-upg-3.7.1.sh

$ sudo sh ker-upg-3.7.1.sh

After the completion, reboot the system for the changes to take effect and after reboot run the below command to confirm the version.

$ uname -r

In case if the kernel 3.7.1 is not compatible with your system hardware, then run the below command to remove the kernel 3.7.1 and switch back to previous kernel.

$ sudo apt-get purge linux-image-3.7.1-030701

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