I have a Lenovo X240 laptop that has dual boot (Windows and Ubuntu), but Ubuntu won't start (Windows works fine).
I get stuck on a black screen with the following followed by a blinking cursor:
[0.142165] Error parsing PCC subspaces from PCCT
Busybox v1.22.1 (Ubuntu 1:1.22.0-15ubuntu1) built-in shell (ash)
Enter'help' for a list of built-in commands.
(initramfs)