[openbox] Window Placement in MergedFB (not Xinerama) Mode with ATI Radeon 7500

[Adam Kessel]

On Tue, May 25, 2004 at 08:15:22PM +0200, Mikael Magnusson wrote:
> On Tue, 25 May 2004, Adam Kessel wrote:
> > Is there any way to tell OpenBox to always open child windows on the same
> > screen as the parent window in MergedFB mode?  Does OpenBox even know
> > what MergedFB mode is?
> Most likely not, I don't.

http://www.botchco.com/alex/radeon/mergedfb/cvs/DRI/final/radeon.4.html

   "This enables merged framebuffer mode. In this mode you have a single
   shared framebuffer with two viewports looking into it. It is similar
   to Xinerama, but has some advantages. It is faster than Xinerama, the
   DRI works on both heads, and it supports clone modes.  Merged
   framebuffer mode provides two linked viewports looking into a single
   large shared framebuffer. " 

I am using pseudo-Xinerama mode, described as:

    Since merged framebuffer mode does not use Xinerama, apps are not
    able to intelligently place windows. Merged framebuffer mode provides
    its own pseudo-Xinerama. This allows Xinerama compliant applications
    to place windows appropriately. There are some caveats. Since merged
    framebuffer mode is able to change relative screen sizes and
    orientations on the fly, as well has having overlapping viewports,
    pseudo-Xinerama, might not always provide the right hints. Also many
    Xinerama compliant applications only query Xinerama once at startup;
    if the information changes, they may not be aware of the change. If
    you are already using Xinerama (e.g., a single head card and a
    dualhead card providing three heads), pseudo-Xinerama will be
    disabled.

If pseudo-Xinerama works as described, it seems like OpenBox's Xinerama
support should place windows in the right place--right?  Any way to
figure out what's actually going on?
-- 
Adam Kessel
http://adam.rosi-kessel.org