The microcode file found in 3.20180108.0+really20170707ubuntu16.04.1 for my Haswell CPU still causes problem that I haven't had before.
When booting the kernel, it cannot find any partitions. Funiliy, the initrd file contains nothing but the microcode file. Reverting manually to a known-good initrd file (also containing nothing but the microcode file) fixes it. Here the relevant sha1sums: Good: d41b5f3302bdccec086c78f88d6eae923b64086a kernel/x86/microcode/GenuineIntel.bin Bad (found in 3.20180108.0+really20170707ubuntu16.04.1): d63a2a7ecf16463c196f83b8f260d0e8a7ad4e27 kernel-1/x86/microcode/GenuineIntel.bin (GenuineIntel.bin is sourced from /lib/firmware/intel-ucode/0/06-3c-03.initramfs on my Haswell CPU) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1742933 Title: Regression in 2018-01-08 updates To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/intel-microcode/+bug/1742933/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
