How can I provide a logfile , I CANNOT get nor virtual console nor Xdisplay
What I see is : linux start loading kernel , with screen definition from grub , and when it will switch to the screen found by kernel , it hangs .
So no possible to get journalctl.
The only way to go back is POWEROFF / POWERON and boot with earlier kernel 4.15.15 towo 1
The PC with the problem is a laptop , I have also a desktop with kernel 4.17 and here no problem.
If you know which logfile you want , I can mount disk from lapotop on desktop and give it, but I do not know which file, and all log file ,I think it is too much
Thanks