Under "Screensaver" make sure you have the "Lock screen after" setting
set to 0.
Confirmed works as you describe with command:
> xscreensaver-command -activate
I've noticed various power management tools interfere with the
xscreensaver default xlock. This could be why you're experiencing
difficulty.
> xscreensaver-command -version
XScreenSaver 5.30
** Changed in: xscreensaver (Ubuntu)
Status: New => Invalid
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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to xscreensaver in Ubuntu.
https://bugs.launchpad.net/bugs/1494454
Title:
Lock screen on wakeup from screensaver - feature request
Status in xscreensaver package in Ubuntu:
Invalid
Bug description:
It would be really good if there could be a way of setting it so that
during the time that the screensaver is on, if there is any
interaction which wakesup the machine happens, for it to automatically
ask for the password like it can do after a set time if set. So that
if the screensaver turns on, and say somebody wiggles the mouse to
wake it up, it requests for the password before it allows them to log
in.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/xscreensaver/+bug/1494454/+subscriptions
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