To mount a casper file system, which is a persitent drive on a live USB.
mount casper-rw by $ sudo mount -o loop /media/casper-rw /tmp/casper/
Ubuntu 18.04. Window Manager restarts by ALT+F2 and then r and ENTER.
Ubuntu 14.04. Workspace switcher freezes: it is "unfreezed" by ALT+ESC.
Screen Lock freezes after too many characters in password field by mistakes.
for example, a tip of your book is on your keyboard, which put too many
characters in the password field. It freezes your lock screen. You
can not delete the characters input. your mouse works but right top
corner pull down does not work. Enter key does not respond with
"password error". Thus you basically stack. The easiest way is to
kill your window manager, but it loses all sessions, windows you
opened, unsaved data and so on. It is really annoying.
The best way to kill the lock screen without losing your
session: $ sudo loginctl unlock-session [id]. [id] is the ssesion id
you get by typing loginctl list-sessions. you try one by one.
Kill the lightdm, which is the window manager controling your
screen lock. Note that you lose all sessions, all windows will be
closed and all unsaved data will be lost.
Workspace switch is very slow. I am looking for a solution for this.