Package: intel-microcode Version: 3.20260227.1 Severity: normal Tags: upstream X-Debbugs-Cc: [email protected]
Hi Henrique, sid is still at 3.20260227.1 (last upload 2026-03-07). microcode-20260925 carries the published fix for Meteor Lake (06-aa-04) and ships the published fix for the revision current OEM firmware has been distributing (20260811 also carries security updates (INTEL-SA-01379)): https://github.com/intel/Intel-Linux-Processor-Microcode-Data- Files/releases/tag/microcode-20260925 | MTL | C0 | 06-aa-04/e6 | old 00000028 | new 0000002b | Core Ultra | Purpose: "Update for functional issues." Why this matters: upstream shipped 06-aa-04 revision 0x2a in 20260811 and withdrew the file one day later (20260812: "functional issues observed when loading the MCU in some platforms"). OEMs had already baked 0x2a into firmware by then, so for machines whose firmware now applies 0x2a, the currently packaged 0x28 is a guaranteed no-op (the early loader does not apply equal-or-lower revisions) - those machines permanently run the revision Intel retracted. Only 0x2b would take over. (OS early-loading of 0x2a on pre-August firmware also caused instant-reboot regressions, ~30 reports: https://github.com/intel/Intel-Linux-Processor-Microcode-Data- Files/issues/112 My machine is in that camp: HP ProBook 460 16 G11, Core Ultra 7 155H (sig 0xa06a4), BIOS W72 Ver. 01.10.02. Verified locally: /proc/cpuinfo reports microcode 0x2a, dmesg reports "microcode: Current revision: 0x0000002a", and Debian's bundled file for 06-aa-04 is revision 0x28. Repeated fatal machine checks at runtime, signature stable across 7.2.12 and 7.2.14+deb14-amd64: kern.log.1:2026-10-29T16:54:38 kernel: mce: [Hardware Error]: CPU 12: Machine Check: 0 Bank 0: b200000000000400 kern.log.1:2026-10-29T16:54:38 kernel: mce: [Hardware Error]: PROCESSOR 0:a06a4 TIME 1793289190 SOCKET 0 APIC 0 microcode 2a Identical signature again on 2026-10-31 (kernel panic both times); on 2026-11-03, panic about 2 min after boot. Ruled out: RAM (EDAC igen6, no CE/UE), NVMe (SMART clean), thermals. Please upload 3.20260925.1 - for machines with firmware-0x2a it is the first Debian-packaged revision the early loader would actually accept. Thanks :-) Best regards, Dennis -- System Information: Debian Release: forky/sid APT prefers unstable APT policy: (500, 'unstable') Architecture: amd64 (x86_64) Kernel: Linux 7.2.14+deb14-amd64 (SMP w/22 CPU threads; PREEMPT) Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8), LANGUAGE not set Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages intel-microcode depends on: ii iucode-tool 2.3.1-3 Versions of packages intel-microcode recommends: ii initramfs-tools 0.151 intel-microcode suggests no packages. -- no debconf information
