Freeze during bootup

If mouse or any below still works

Try Alt+F2, run xkill
Try Ctrl+Alt+arrow to switch to another workspace and try to open System Monitor
Or, use ctrl+alt+F1 etc. switch to char counsel, and use commands
1. sudo stop lightdm...... wait.......sudo start lightdm (restart X and kill all running application)
2. kill X as super user restore desktop BUT KILL YOUR CURRENT SESSION

If nothing works, try the (Alt+Sys+) "REISUB" magic key

The Magic System Keys when the system REALLY freezes

Checking boot log

$ journalctl --list-boots

$ journalctl -b-1

I suspect this is related to suspension, cause it seems to occur after I close the lid of my laptop then re-open it.

To edit boot parameter:

During boot, press and hold left SHIFT (someone suggested but haven't been successful) or quickly press ESC
Menu show up, press "e" to edit

Recording things may help:

Add "noresume" after "linux..." line
- to make it permanent edit grub file
- however it prevent from resuming a hibernated system
Someone suggests "nomodeset" to fix a common Navdia driver issue - however this does not seem to relate to my problem
Diagnose - `systemd-analyze blame` `systemd-analyse time` systemd-analyze critical-chain