What triggers this screen prompt "Screen used by <username> on host01."?

Every now and then some key combination clears my working (Gnu) screen and brings up this message:

Screen used by <username> on host01
Password:

What key combination causes this and what does it signify?

Asked By: vfclists

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According to this source it’s the key combination Ctrl+a and then x.

It signifies locking the screen and unlocking it with your password.

Answered By: polym

If you want to get rid of locking feature you might set LOCKPRG variable to /bin/false.

LOCKPRG=/bin/false
export LOCKPRG
Answered By: jurkomp
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