[Bug 37139] mouse movement wakes screensaver

[Tero Karvinen]

Public bug reported:
https://launchpad.net/malone/bugs/37139

Affects: gnome-screensaver (Ubuntu)
       Severity: Normal
       Priority: (none set)
         Status: Unconfirmed

Description:
Minor mouse movement (tram passing by, walking around) stops
xscreensaver.

With an optical mouse on an uneven surface, it is sometimes difficult to
click an icon to "xscreensaver-command -throttle" without immidiately
stoping screensaver again. Disabling screensaver is very annoying if
sleeping or doing non-computer work near a desktop computer.

Suggestions:
- Add option to ignore mouse movement events
- Add a cli command to immidiatly go to the deepest DPMS sleep, only waking from keyboard input

Tested on gnome-screensaver and Dapper Flight.

Same problem with xscreensaver #34854.