Lately my Macbook Pro switches to the "Lock Screen" page out of nowhere while I am working. When I say "while I am working" I want to make clear it's not due to inactivity, I am actually using the computer as it happens.
It does not log me out (none of my windows are closed), it only locks.
I've noticed it happens usually shortly after I've logged in. So for example it's morning, I login start doing things then a few seconds later I'm locked out. I log back in, and again a few seconds later I'm locked out. It happens 2 or 3 times before it quiets down.
macOS High Sierra 10.13.4
Best Answer
It is likely that accidentally the lock screen keyboard shortcut, i.e. Control + Command + q is getting invoked.
It could be either you pressing the key sequence unknowingly or, one or two of the keys from the combination is stuck and pressing the third key by chance is invoking the sequence.
To resolve this issue, shut down your MacBook Pro, and repeatedly tap on each of the keys in succession and try to unstuck them. They turn on the MacBook Pro, resume your work and see if the problem goes away.