ODROID H+ Can't install RTL8125 driver on Linux Mint 20 RT

I am new to LinuxCNC and my unix in general is a bit rusty, but I was able to follow the steps in the "LinuxCNC on Linux Mint 20 quick and nearly easy install" to install and boot into Mint. As expected, the RTL8125 driver was not installed, but I was able to load it separately from a USB drive. But, when I boot in to the RT kernel, the driver is missing and I am not able to follow the same process for installation because the build files are not included. I tried using the .deb install and that did not error, but also did not install the driver.

Anyone else solve this one?

Have you installed the kernel headers for the RT Kernel ?

Thanks for the quick reply. The ground work you guys have done has been immensely helpful.

BeagleBrainz wrote:

Have you installed the kernel headers for the RT Kernel ?

I looked into it but I have hit limits of my linux understanding. I found a method to pull them in if I had internet access but I am not sure how to install them from a jump drive. Alternatively, it seems I might be able to install them when booted in the other kernel, but I couldn't identify the correct install. Now that you have confirmed that this is the right course, I will keep working at it.

Thanks again.

I was able to get the headers installed and the rtl8125 driver built. I am now on the internet in the RT kernel. Thanks again for the push in the right direction.

Does installing the debian version of gcc adversely affect the Mint\Ubuntu version of gcc ?
I only ask this as the OP had built the module for the standard kernel and therefore had gcc and the required libs to build.

I know Mint 19 uses gcc 7.50.Looks Like Mint 20 either uses gcc 9 or can use gcc 10

Cheers mate.