Real-time kernel on Bullseye

[fredx181]

Need to use real-time kernel on Bullseye or Sid ? Here's how (for frugal install only):
First, install (if not already installed) latest package "upgrade-kernel":

Code: Select all

apt update
apt install upgrade-kernel

Run from Menu > System > Upgrade kernel (which btw, can be used also to upgrade your kernel to newest available)

- Choose partition to build the files on (needs to be a Linux partition, e.g. ext4 formatted)

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- Choose kernel (with "rt" in the name) I chose: linux-image-5.10.0-8-rt-amd64-unsigned ("unsigned" should be OK)

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- Installing...

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- Creating .squashfs module...

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- Finished... copy the files in this directory to the "live" frugal install folder (overwrite existing, recommended to make backup of the original files first)

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Done! Reboot to make use of the new rt kernel.

Fred

[rockedge]

very nice addition Fred!

[rcrsn51]

Hi Fred:

When I run the mklive script, which kernel does it use - signed or unsigned?

[fredx181]

Hi Fred:

When I run the mklive script, which kernel does it use - signed or unsigned?

It installs the meta-package: linux-image-amd64 (or for 32bit the i686 package)
That has, at this point in time, dependency: linux-image-5.10.0-8-amd64 (signed). https://packages.debian.org/en/bullseye ... .0-8-amd64

[fredx181]

very nice addition Fred!

Thanks, this option exists for some time already, just thought I'd do a little promotion now .

[stemsee]

Is this the correct script after update? It doesn't seem to work as shown...

upgrade-kernel.gz

(11.6 KiB) Downloaded 71 times

[fredx181]

Is this the correct script after update? It doesn't seem to work as shown...

upgrade-kernel.gz

No, it's for Ubuntu, probably you took it from FossaDog? Above how-to is for Debian Bullseye.
I don't think Ubuntu has a real-time kernel, but does have a "low-latency" kernel AFAIK.
Btw, upgrade-kernel is not a standalone script, it depends on initramfs skeleton (in /usr/local/cr-initrd)

[rcrsn51]

It installs the meta-package: linux-image-amd64 (or for 32bit the i686 package)
That has, at this point in time, dependency: linux-image-5.10.0-8-amd64 (signed). https://packages.debian.org/en/bullseye ... .0-8-amd64

Thanks. This is a huge advantage of overlayfs vs aufs - people can do their own kernel upgrades. And with a reliable kernel from a trustworthy source.

I have made the combo-wifi-driver-pack for k5.10.0-8-amd64.