I have been using Linux since 1998 starting with Redhat 5.1. Over the years I have used FreeBSD, OpenBSD, NetBSD, Solaris, Redhat Enterprise Linux, Centos, Debian, Fedora and Ubuntu. I have also created my own Linux distro from scratch using Busybox and custom init scripts for both x86 and ARM. I have no problem working with x86 or ARM hardware.