State of Zaphod dual screen support

[Peter Hutterer]

On Sun, Feb 28, 2010 at 11:29:12PM -0700, David Mohr wrote:
> I'm part of the minory who currently uses a Zaphod style dual monitor
> setup with separate X screens for every monitor. When I recently
> upgraded from 7.4 to 7.5, some utilites which I adopted[1] which
> manipulate the mouse cursor started malfunctioning. My two X screens
> are setup to be "apart" so that the mouse does not pass between them,
> and I use my utilities to move the mouse between the two screens. But
> with 7.5 every now and then a condition is triggered where the mouse
> cursor will just continually jump from screen to screen, keeping the X
> server at 100% CPU. I cannot even shut it down using
> CTRL-ALT-Backspace.
> 
> I've noticed comments in other threads on this mailing list that
> Zaphod mode is not really supported any more (for completeness' sake,
> I'm using the binary Nvidia drivers). So my question is, is there
> value in trying to track down the bug in Xorg which causes the mouse
> to jump back and forth? 

yes. I've seen this myself and I have not yet identified the issue. it's a
server bug and unrelated to the binary driver. If you can help track this
issue down, it would be much appreciated.

Cheers,
  Peter