# Replacing Ubuntu kernel on Pi 4B

**URL:** <https://community.roonlabs.com/t/replacing-ubuntu-kernel-on-pi-4b/258132>\
**Category:** Raspberry Pi\
**Created:** [December 3, 2023, 5:49am UTC](https://community.roonlabs.com/t/replacing-ubuntu-kernel-on-pi-4b/258132 "2023-12-03T05:49:42Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Billy\_Cheung](https://community.roonlabs.com/user_avatar/community.roonlabs.com/billy_cheung/32/250511_2.png) [@Billy\_Cheung](https://community.roonlabs.com/u/Billy_Cheung)\
**Post date:** [December 3, 2023, 5:49am UTC](https://community.roonlabs.com/t/replacing-ubuntu-kernel-on-pi-4b/258132/1 "2023-12-03T05:49:43Z")

</div>

I used to enable Ubuntu realtime kernel or lowlatency kernel in my other x64 machines (i.e. pro enable realtime-kernel). Yet I can’t do it on Pi. Now I got 3 kernels inside Pi, viz, ordinary one, RT, and lowlatency, but only the ordinary kernel is boot.

 ![image](https://roon-community-uploads.s3.amazonaws.com/original/4X/2/4/3/2438e77fad3837b661bd3bab94160430f3939df5.png)

As I can’t find the answer in Google, may I know how to do it on Pi 4B? Or was Ubuntu simply not supporting RT kernel in Pi?

Thanks all. 🙂