OS: KDE Neon 5.14 based on Ubuntu 18.04 Kernel version: 4.15.0-42-generic
I tried booting from an older kernel version from the grub menu, still the system won't boot. It shows a long list of messages and doesn't proceed after the message
Started TLP system startup/shutdown.
Kernel was updated a few days ago. However, there was no problem booting after the update. I cannot identify what is causing this issue. Does it have something to do with the graphics driver?
startx from the command line solved the issue. However, I would like to know what caused this issue.
Update 2: After reboot, the GRUB file is not found and system doesn't boot. I tried running the boot-repait utility and it fixed the grub. However the system boots into a black screen with a white blinking cursor, and does not show the login screen even after waiting for an hour.