I/O errosr usually indicate that the drives are about to fail. I'd start looking for new drives and transfer data as soon as possible.

top would show you which process is actually using the cpu core.

Which is why they said "modern" kernels. LTS systems are usually not going for modern. :)

I use the feedreader from within Thunderbird for RSS. But I just use it to track software releases. Not articles and such.

I would also be interested in such a thing. :)

It's a good way of solving it. It's not scriptable though as it requires user-input.

As far as I know, only the kernel module was open sourced and in doing that Nvidia moved a lot of stuff from the driver, to the firmware/software part of their stack instead. So you would still need those, which are not open.

While the RockPro64 is great if you are looking for something ARM based, I will recommend the x64 based Odroid H3(+).

Mine has an nvme as OS drive and 2 sata SSDs as storage drives. It idles below 10W and uses like 15W under load.

Can recommend.

H3+: https://www.hardkernel.com/shop/odroid-h3-plus/

H3: https://www.hardkernel.com/shop/odroid-h3/ (what I have)

As far as I know, Windows 10 licenses are on the motherboard/BIOS, so changing the harddrive should just work.

I have heard some talk about the license getting disabled if you switch some hardware in machines as it no longer can identify it as the same machine.

But is it running at the same time as a an OS or is it just a device without an OS running, sharing storage?

I don't know Focalboard, but I assume it has an admin panel, like most web based software?

You should be able to just run the docker container and expose port 8080, then visit http://localhost:8080 to complete the setup. You won't have SSL or anything though. If it still asks for domain name, maybe you can put in localhost.local ?