Manjaro/XFCE4: spontaneous screen locking

[rossk]

When I'm using qutebrowser or Chromium (but not firefox), my screen will spontaneously lock. Sometimes this happens when I click a link, enter a URL, switch tabs, or scroll down to reveal new content.

I took two incredibly boring videos, that demonstrate the problem. 

Chromium: https://www.youtube.com/watch?v=jC1qPaECD6E

Qutebrowser: https://www.youtube.com/watch?v=kGs_ediL5XU

Does anyone have any ideas how to troubleshoot this? Or, what the problem might be?

[wdt]

Is the keyboard dead too? Can you change to TTY2 ? (C-A-F2)
If so, dmesg |tail or ps aux |grep chrome,. then sudo kill -1 $psid to see if unlocks
or kill -9 to kill it or journalctl ,, but I don't know "right" switches, -r maybe

[rossk]

Is the keyboard dead too? Can you change to TTY2  ? (C-A-F2)
If so, dmesg |tail  or ps aux |grep chrome,. then sudo kill -1 $psid to see if unlocks
or kill -9 to kill it  or journalctl  ,, but I don't know "right" switches, -r maybe

No-- the screen goes blank, but once I hit the keyboard, I get prompted for my password, and everything is fine until it happens again.

[rossk]

I've switched to Fedora and haven't seen this issue there.