LinuxCNC on Raspberry Pi 4

Using the following download:

• LinuxCNC 2.8.1  Raspberry Pi OS based on Debian 10 Buster

I flashed an SD card and put it into my Raspberry Pi 4. It doesn't boot, instead showing the following error: "This board requires newer software". (Screenshot attached)

Any workaround for that one, apart from setting up Raspbian/Debian from scratch?
 

I was sure there is no RPI 4 with 1GB of ram, i was wrong
First result sheds some light
www.google.com/search?q=rpi4+versions&so...oAEB&sclient=gws-wiz

Yeah, and it's the only model available for sale anywhere at the moment

knipknap wrote:

Using the following download:

[*]LinuxCNC 2.8.1  Raspberry Pi OS based on Debian 10 Buster

I flashed an SD card and put it into my Raspberry Pi 4. It doesn't boot, instead showing the following error: "This board requires newer software". (Screenshot attached)

Any workaround for that one, apart from setting up Raspbian/Debian from scratch?

 


You can try it this way:

1) download and install the legacy version of RaspiOS
downloads.raspberrypi.org/raspios_oldsta...ios-buster-armhf.zip

2) apply the procedure to install the kernel PREEMPT_RT (32 bit)
github.com/kdoren/linux/releases/tag/rpi_5.10.74-rt54

3) using the gdebi utility install Linuxcnc 2.8.2 from .deb-packages available 
buildbot.linuxcnc.org/dists/buster/2.8-r...g68f883b96_armhf.deb

Hi All,

I also faced with this when iam using "LinuxCNC 2.8.1  Raspberry Pi OS based on Debian 10 Buster", but on 4GB version of RPI4.
I tried with two different SD car, with one USB flash drive, and with external SSD, but same result unfortunatelly.
Apart from everything, somebody have any clue what the problem?

Following  elovalvo:
1. I tried to install a PREEMPT_RT kernel, but i am stuck with that.
2. Buildbot: When i want to reach this page, i recieved this message: "this site can’t be reached"

How should i proceed?
Thank you in advance!
 

It's a bit late here now, but I would suggest starting with a standard 64-bit Raspbian install then searching for a packaged RT kernel.

I think it will probably be this one: packages.debian.org/buster/linux-image-rt-arm64

If you find one then the next step is to install is (sudo apt-get installl linux-image....... ) then compile LinuxCNC from source. (As the buildbot is only making 32-bit arm-hf images)