On Mon, 2009-10-26 at 16:05 +0100, Lennart Poettering wrote: > > NVidia offers two ways to do it: you can setup the second monitor to be what > > they call a "separate X screen" ( and that it precisely what I have here ) > > or a "TwinView" (nvidia-speak for Xinerama ).
> this is bogus. gnome-panel is xinerama-aware and does not stretch > panels across to monitors of the same screen. You are right, Lennart. Just FYI, TwinView is actually not the same thing as Xinerama. It is a proprietary and hacky NVIDIA solution to multiple monitors (been around for yonks -- before Xinerama was in X, I believe, but you wouldn't have heard of it unless you have had NVIDIA hardware). Basically, X thinks it has a giant monitor the size of all your screens (e.g. 2560x1024), and then the NVIDIA driver chops it up into viewports and sends it out across the various monitors, without X being aware of it. Totally not standards-compliant, and it's kind of redundant these days because recent versions of the NVIDIA driver support RandR 1.2 AFAIK. When nvidia-settings sets up a "Separate X Screen", you can move the mouse between the two monitors, but you can't drag windows -- a window launched on one is trapped inside that monitor, and vice versa. Not sure what implications this has for Pulse, but I thought I'd just clear this up.
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