Package: needrestart Version: 3.1-1 Severity: normal I recently moved a system to a different CPU.
I got lots of needrestart warnings about a pending processor microcode upgrade but not even a reboot fixed the issue. The reason is that the initramfs had not been updated yet so restarting did nothing because the initramfs did not contain any uCode updates for the new CPU, only the old one. needrestart should not request a restart in this situation because it will cause the new uCode to be loaded at boot and thus needrestart will continue to request a reboot even though that doesn't do anything. In addition to scanning installed microcode from the intel-microcode package, I would suggest scanning each of the initramfs files with iucode_tool (see the command-line below). If the initramfs uCode is not present or is outdated compared to the installed uCode, an initramfs rebuild could be suggested. If no initramfs files are present, the reboot comparison could be done between the installed and running uCode. If initramfs files are present, the reboot comparison should be done between the latest initramfs uCode revision and the running uCode. Pending processor microcode upgrade! Diagnostics: The currently running processor microcode revision is ... which is not the expected microcode revision .... Restarting the system to load the new processor microcode will not be handled automatically, so you should consider rebooting. [Return] $ /usr/sbin/iucode_tool -tr -Sl /boot/initrd.img-4.15.0-3-amd64 /usr/sbin/iucode_tool: system has processor(s) with signature ... microcode bundle 1: /boot/initrd.img-4.15.0-3-amd64 selected microcodes: -- System Information: Debian Release: buster/sid APT prefers testing-debug APT policy: (900, 'testing-debug'), (900, 'testing'), (800, 'unstable-debug'), (800, 'unstable'), (790, 'buildd-unstable'), (700, 'experimental-debug'), (700, 'experimental'), (690, 'buildd-experimental') Architecture: amd64 (x86_64) Kernel: Linux 4.15.0-3-amd64 (SMP w/4 CPU cores) Locale: LANG=en_AU.utf8, LC_CTYPE=en_AU.utf8 (charmap=UTF-8), LANGUAGE=en_AU.utf8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages needrestart depends on: ii binutils 2.30-15 ii dpkg 1.19.0.5 ii gettext-base 0.19.8.1-6 ii libintl-perl 1.26-2 ii libmodule-find-perl 0.13-1 ii libmodule-scandeps-perl 1.24-1 ii libproc-processtable-perl 0.55-1 ii libsort-naturally-perl 1.03-2 ii libterm-readkey-perl 2.37-1+b2 ii perl 5.26.2-2 ii xz-utils 5.2.2-1.3 Versions of packages needrestart recommends: ii libpam-systemd 238-4 Versions of packages needrestart suggests: ii iucode-tool 2.3.1-1 ii libnotify-bin 0.7.7-3 ii needrestart-session 0.3-5 -- no debconf information -- bye, pabs https://wiki.debian.org/PaulWise
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