Easier to just reassign this to hotkey-setup. I can confirm this bug on my Thinkpad T23. Debug log seems to be similar. It doesn't matter what screensaver theme you use, they all fail.
** Changed in: gnome-screensaver (Ubuntu) Sourcepackagename: gnome-screensaver => hotkey-setup -- screensaver doesn't activate https://launchpad.net/bugs/37555 -- desktop-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
