Comment 84 for bug 1759920

Thanks @tyhicks.

$ dmesg | grep microcode
[ 0.000000] microcode: microcode updated early to revision 0x1f, date = 2018-02-07
[ 0.843339] microcode: sig=0x306a9, pf=0x2, revision=0x1f
[ 0.843412] microcode: Microcode Update Driver: v2.2.
$ cat /proc/version_signature
Ubuntu 4.13.0-38.43+lp1759920.1-generic 4.13.16
$ cat /proc/cmdline
BOOT_IMAGE=/boot/vmlinuz-4.13.0-38-generic root=/dev/mapper/lmvg-ubunturoot ro zswap.enabled=0 quiet