![]() ![]() ![]() ![]() Note: "SMP PREEMPT RT" validates that your system is running real time kernel. ![]() Once the system reboots, open the terminal and use uname -a to check the kernel version, it should look like the following Linux abhay-home 4.9.115-rt93 #1 SMP PREEMPT RT Mon May 13 03:32: x86_64 x86_64 x86_64 GNU/Linux To change default kernel in grub, edit the GRUB_DEFAULT value in /etc/default/grub to your desired kernel. Verify that there is a menuentry containing the text "menuentry 'Ubuntu, with Linux 4.9.115-rt93'" in /boot/grub/grub.cfg file Verify that initrd.img-4.9.115-rt93, vmlinuz-4.9.115-rt93, and config-4.9.115-rt93 are generated in /boot directory and update the grub. Preemption Model (Voluntary Kernel Preemption (Desktop)) įully Preemptible Kernel (RT) #SelectĬheck for stack overflows #Already deselected - do not select Go to the location and make the changes accordingly #Graphical Menu# The next command launches a graphical menu in the terminal to generate the config file. This step requires libncurses-dev sudo apt-get install libncurses-dev libssl-dev Step 3 - Patch the kernel #Move to kernel source directory Step 2 - Unzip the kernel tar -xzvf linux-4.9. The kernel and patch I used were linux-4.9. and patch-4.9. Similarly, go to and download the RT patch with same version as the downloaded kernel version. Go to and download a desired version of kernel to ~/kernel. Make a working directory #Move to working directory Pls note that these steps could change depending on when you're reading this, upto date as of -21. This way you’ll get this new kernel and everything else a point release (like a new MESA graphics stack) out-of-the-box.There's no straight forward documentation for this, but after some tests I was able to resolve it with the following steps. If you’re not already using Ubuntu 22.04 LTS it’s perhaps best waiting for the new ISOs to drop when Ubuntu 22.04.3 LTS is released next week. The kernel uplift includes a bunch of features, including an updated NTFS3 kernel driver, Intel Arc graphics enablement, performance boosts for Intel Skylake CPUs, support for Sony DualShock 4 gamepad, and the ability to drive 60Hz displays from the raspberry Pi 4. Linux kernel 6.2 benefitsĪlthough Linux kernel 6.2 isn’t the most recent kernel release it’s newer than what’s hitherto been ‘officially’ available in Ubuntu 22.04 LTS. If you don’t want to install all pending updates, run sudo apt install linux-image-generic-hwe-22.04 to pull it in. You can also update via the command line by running sudo apt update & sudo apt full-upgrade or sudo apt dist-upgrade. When you reboot (if you have more than one kernel installed) be sure to select the 6.2 version. To install the new kernel on Ubuntu 22.04 LTS just pop open the Software Updater tool, run a check for updates, and install those listed. This time the update has arrived earlier – which is great news for those already on the LTS as it means they can benefit from all the new features in Linux 6.2 without having to wait for ISOs (they don’t need) to be released. Typically, HWE updates roll out once the formal point release itself is made. It back-ports the Linux 6.2 kernel used in Ubuntu 23.04 “Lunar Lobster”. Ubuntu 22.04 LTS users can now upgrade to Linux kernel 6.2 using the Software Updater tool.Īhead of the formal Ubuntu 22.04.3 point release due next week (August 10) Canonical has issued an updated kernel to existing LTS existing users to install. ![]()
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