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I have seen a few similar problems on SE. None of them match exactly, and unfortunately none of their solutions worked either.

The problem: Alt + Left key locks the screen. This is also the Chrome browser shortcut for back, so pretty frustrating.

Solutions tried: I've looked through all the keyboard shortcuts and nothing matches this particular combination. I can't see anything in Tweak Tools either.

When: most frustratingly, intermittently: when I first launch Chrome it doesn't happen. When I first start up my machine it doesn't happen. Something triggers this behaviour in my normal workflow, and then for the life of me I have no idea how to turn it off without restarting my system.

Set up: Ubuntu GNOME 16.04 on an Dell XPS 13

christopherlovell
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1 Answers1

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This happened due to not restarting after upgrade.

I had similar problem but doesn't lock the screen rather it switches other screens in background, and it has labeled as tty1,tt2..., etc.

In my case there were 6 ttys opened and whenever I was doing alt + left arrow, it was switching to different ttys which are processes running in background and it also has login tty, kernel bootinfo tty, driver running tty.

It doesn't show only lock screen but when you switch again then you get your original chrome-screen back.

this may be the bug but after a restart, it works as we intended. hope this helps your answer.

GD- Ganesh Deshmukh
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