I had this same problem on a system with an "ASUS H170M-PLUS" motherboard, a Core i5-6600 CPU, internal graphics and up-to-date Ubuntu 17.10.
Booting into the recovery console worked, but when trying to boot into the desktop it would always hang somewhere before GDM becomes visible. After installing a recent UEFI firmware upgrade (to version 3606) the system booted normally again, and the kernel didn't try to load any microcode after that; based on the revision number, it seems like it contained the same microcode fix as the 'intel-microcode' (but also a ME firmware upgrade, and likely also some other necessary fixes). I wonder if the microcode fix also requires changes to the ME and/or to some UEFI functions in order to work properly? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1759920 Title: intel-microcode 3.20180312.0 causes lockup at login screen(w/ linux- image-4.13.0-37-generic) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/intel-microcode/+bug/1759920/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
