[Bug 29521] Fade to black doesn't work well.

[Amodef]

Public bug reported:
https://launchpad.net/malone/bugs/29521

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

Description:
When the screensaver appear, a fade should precede it. The fade is there
but, after it, the normal screen come back, and after an half second,
the screensaver just comes.

I've made test with fade to black and fade to another screensaver : i've
the same results.