LinuxCNC on Raspberry Pi 5

Hi everyone!

i'm quite new to linuxcnc and have some basic knowledge about linux, i don't want to compile a kernel and that stuff, installing specific packages are nit a problem...

at the moment i'm using a raspi 5 image from linuxcnc download page.
I have some resolution problems with my 7" touchpad, it loads the one and only available resolution 1920x...
i would like to have another resolution, my problem is that the "normal" things for raspi do not worl with debian image.

2 Questions:
- how do i do that with the linuxcnc debian image ?
- should i switch to the image provided here with raspios ?

i'm using the raspi together witth mesa ethernet card

thanks a lot

Lars

In a terminal, what does
xrandr
Return for available resolutions?

Start with the official raspberry pi image, disable wayland, install the real time kernel and then the linuxcnc packages.

Was looking for info about raspberry, do you suggest to make a new buil on pi 4 because it's more stable? Or it's worth go with the 5?

Ex corporate pc is cheaper, more powerful, easier to setup than either the 4 or 5.

I would say in general it is not hard to setup, you need to know how. wink
I got it finally working very well with very low latency on my RPI 5

short description:
- take Raspberry OS 64bit Lite
- install Xfce4
- build the RT kernel the usual way
- install it
- install linuxcnc
It takes some time on the RPI.

As I am writing this in Firefox on this machine, latency-histogram (was started befor starting Firefox!) is running and 17 glxgears.
To be honest, so far I am very happy with.

 

Attached please also find a somewhat "script" to build from scratch.