This has got to be the worst version string ever: $ dpkg -l | grep amd64-microcode ii amd64-microcode 3.20191021.1+really3.20180524.1~ubuntu0.16.04.2 amd64 Processor microcode firmware for AMD CPUs `3.20191021.1+really3.20180524.1~ubuntu0.16.04.2`? Is this a joke?