Password dialog split on dual heads

[Mikko Rauhala]

The xscreensaver in the Hoary preview has a nice new password dialog, but on a
dual-head Radeon mergedfb system (DRI drivers) the dialog splits right down the
middle on both monitors. Luckily this separates the dialog cleanly into the
Ubuntu logo and the rest, but still, should be centered on just one of the monitors.

Otherwise nice, the old dialog was a bit of a wart in the Gnome look'n'feel.

[Scott Robinson (scott-ubuntu)]

XScreensaver appears to be running a single screensaver task for both Xinerama
screens. The Debian unstable version of xscreensaver (4.20) has proper support.

[Andreas Schildbach (schildbach)]

On my setup, this issue is even worse:

Because the secondary display is much larger than the primary one (external
screen vs. internal subnotebook display), the password dialog is located
completely on the secondary. So if I have switched off the secondary display, I
only see a dark screen.

The password dialog should always be centered to the primary screen.

[Oliver Grawert (ogra)]

This bug has been marked as a duplicate of bug 21990.