This bug was fixed in the package intel-microcode - 3.20151106.1 --------------- intel-microcode (3.20151106.1) unstable; urgency=medium
* New upstream microcode data file 20151106 + New Microcodes: sig 0x000306f4, pf mask 0x80, 2015-07-17, rev 0x0009, size 14336 sig 0x00040671, pf mask 0x22, 2015-08-03, rev 0x0013, size 11264 + Updated Microcodes: sig 0x000306a9, pf mask 0x12, 2015-02-26, rev 0x001c, size 12288 sig 0x000306c3, pf mask 0x32, 2015-08-13, rev 0x001e, size 21504 sig 0x000306d4, pf mask 0xc0, 2015-09-11, rev 0x0022, size 16384 sig 0x000306f2, pf mask 0x6f, 2015-08-10, rev 0x0036, size 30720 sig 0x00040651, pf mask 0x72, 2015-08-13, rev 0x001d, size 20480 * This massive Haswell + Broadwell (and related Xeons) update fixes several critical errata, including the high-hitting BDD86/BDM101/ HSM153(?) which triggers an MCE and locks the processor core (LP: #1509764) * Might fix critical errata BDD51, BDM53 (TSX-related) * source: remove superseded upstream data file: 20150121 * Add support for supplementary microcode bundles: + README.source: update and mention supplementary microcode + Makefile: support supplementary microcode Add support for supplementary microcode bundles, which (unlike .fw microcode override files) can be superseded by a higher revision microcode from the latest regular microcode bundle. Also, fix the "oldies" target to have its own exclude filter (IUC_OLDIES_EXCLUDE) * Add support for x32 arch: + README.source: mention x32 + control,rules: enable building on x32 arch (Closes: #777356) * ucode-blacklist: add Broadwell and Haswell-E signatures Add a missing signature for Haswell Refresh (Haswell-E) to the "must be updated only by the early microcode update driver" list. There is at least one report of one of the Broadwell microcode updates disabling TSX-NI, so add them as well just in case -- Henrique de Moraes Holschuh <h...@debian.org> Mon, 09 Nov 2015 23:07:32 -0200 ** Changed in: intel-microcode (Ubuntu Xenial) Status: In Progress => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1509764 Title: Machine Check Exception with Broadwell CPU To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/intel-microcode/+bug/1509764/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs