Public bug reported: The amd64-microcode version (3.20181128.1ubuntu2) is packaged in 2018, which is too old to support the latest AMD Ryzen 3000 series CPUs. In particular, it doesn't include the upstream microcode patch, without which the kernel cannot produce psuedorandom numbers. Instead, in its buggy state, when RDRAND is being asked, the CPU will always produce the same result, 0xFFFFFFFF.
Full report: https://arstechnica.com/gadgets/2019/10/how-a-months-old-amd-microcode-bug-destroyed-my-weekend/ Please update the package for a version dated at the earliest 20191022. https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git ** Affects: amd64-microcode (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1850866 Title: Please sync amd64-microcode from debian bullseye To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/amd64-microcode/+bug/1850866/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
