Have you tried adding pti=off to the kernel boot line? This is supposed to turn off the spectre/meltdown "fix".
Henning Follmann <hfollm...@itcfollmann.com> writes: >Hello, >I have a strange issue with the newest kernel >4.9.0-5-amd64 on this 2011 Macbook Pro. >As far as I can see it has to do with the power management of this laptop. >Whenever the laptop is on power supply the boot process stops hard after >I enter the passphrase for the encrypted lvm. There is one last message >that it tries to mount root but it stops hard there. There is also no log >(of course not because there is no device to write to yet). >when I unplug the laptop during boot it boots fine. >Previous kernel do not show this behavior. > >-H
