Real-Time Kernel with Orange Pi 4 LTS

I am trying to work it out of opi4 minimal trixie 6.12 , as i got success that way with the opi5 .
i'll be back !!

royka wrote:

It doesn't boot or writing error?

got bad sha checksum on all 2 download .

You can try this image, with desktop and gpu hw acceleration but under 1GB:
drive.google.com/file/d/1PCetphqJUFfS3aL...eD7/view?usp=sharing

royka wrote:

As far as I know it shouldn't matter if you install it during compilation, otherwise it would be fixed with "apt reinstall linuxcnc-uspace".
What do you see with: uname -a ?
What do you see in the terminal when you start with: latency-histogram ?
 

The output of uname -a:
root@orangepi4-lts:~# uname -a
Linux orangepi4-lts 6.12.1-edge-rockchip64 #2 SMP PREEMPT_RT Fri Nov 22 18:00:26 +0330 2024 aarch64 GNU/Linux

and when running latency-histogram I get:
Note: Using POSIX Realtime

and just this, seems like waiting for something and nothing shows up any more

Perhaps something wrong with the kernel config? You could try to install the kernel deb that I uploaded to see if that helps. Otherwise you might need to install more software, just install a complete desktop will be the fastest route to find out.

royka wrote:

Perhaps something wrong with the kernel config? You could try to install the kernel deb that I uploaded to see if that helps. Otherwise you might need to install more software, just install a complete desktop will be the fastest route to find out.
 

I compiled a desktop one and I've installed the deb kernel real time, and that fixed it. I didnt change much in config file, the only change was enabling fully preemption and I added the patch you provided and set the gpu governor to performance.