Step one
sudo apt-get purge xscreensaver xscreensaver-data
Step two
sudo apt-get install light-locker
Step three
# which light-locker-command
/...
Step one
sudo apt-get purge xscreensaver xscreensaver-data
Step two
sudo apt-get install light-locker
Step three
# which light-locker-command
/usr/bin/light-locker-command
Step four
Bind global hotkey (keyboard settings for XFCE case) for command
/usr/bin/light-locker-command -l
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