[Bug 35211] locking screen doesn't work after killing X

[Laurent Bigonville]

Public bug reported:
https://launchpad.net/malone/bugs/35211

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

Description:
Hi,

If I kill X with crtl-alt-backspace, I cannot lock the screen when I
login again.

I get "gnome-screensaver-Message: Screensaver is not running!" in
.xsession-errors