PS: I just figured out that late-loading is possible with echo 1 > /sys/devices/system/cpu/microcode/reload
log output: [ 2207.528199] microcode: updated to revision 0xe2, date = 2020-07-14 [ 2207.531809] x86/CPU: CPU features have changed after loading microcode, but might not take effect. [ 2207.531811] x86/CPU: Please consider either early loading through initrd/built-in or a potential BIOS update. [ 2207.531813] microcode: Reload completed, microcode revision: 0xe2 is that something I should enable by default as a workaround? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1904733 Title: boot stuck on reboot due to microcode loading To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/intel-microcode/+bug/1904733/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs