[Bug 1795594] Re: Microcode for 206C2 Westmere EP is missing

Henrique de Moraes Holschuh 1795594 at bugs.launchpad.net
Wed Oct 3 20:07:46 UTC 2018


For 0x206c2:
Refer to https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=907402

0x206c2 is missing *from the Debian and Ubuntu packages* on purpose, but
we could ship it if Intel explicitly tells us it is not going to
permanently disable a box that has a very old BIOS with the blacklisted
SINIT ACM for Intel TXT AND which happens to have Intel-TXT-based secure
boot enabled in BIOS.


For 0x106e5, 0x306e4:
They are present in the intel-microcode packages in Debian, so I will leave the answer to the Ubuntu maintainer.  Are you sure they are really missing from /lib/firmware/intel-ucode?

This will check if the microcodes are in the package (run it with the
package installed and no extra manually-added microcodes in
/lib/firmware/intel-ucode or /usr/share/misc/intel-microcode*)

iucode_tool -q -l -s 0x106e5 -s 0x306e4 /lib/firmware/intel-ucode


" reports they exist, then your issue is that they're not being installed to the initramfs.

** Bug watch added: Debian Bug tracker #907402
   https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=907402

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https://bugs.launchpad.net/bugs/1795594

Title:
  Microcode for 206C2 Westmere EP is missing

Status in intel-microcode package in Ubuntu:
  New

Bug description:
  After installing / updating new intel-microcode-package
  (3.20180807a.0ubuntu0.16.04.1 or 3.20180807a.0ubuntu0.18.04.1) we got
  no microcode for Intel Westmere EP (CPUID 206C2).

  After replacing /lib/firmware/intel-ucode/ with files from
  https://downloadcenter.intel.com/download/28087/Linux-Processor-
  Microcode-Data-File and update-initramfs -u the new microcode is
  loaded.

  Did you ignore some CPUIDs?

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