Hey all, I'm looking for some advice about a driver which is in
dual-head mode but does not seem to support XINERAMA.  This driver is
the latest ATI (firegl?) driver.  Logs from this server were sent to me
by the user:  http://vektor.ca/bugs/atidriver/


  I'm wondering if there are other drivers that do this, and if anyone
knows of a way I could detect this case.


  The problem is that my application needs geometry information to
calculate the pixel aspect ratio.  X tells me the geometry is 867mm x
347mm but the vidmode extension tells me the current resolution is
1280x1024, and so my pixel aspect ratio calculation thinks the user is
going through an anamorphic lens and they end up with very stretchy
looking video.

  I need to use the vidmode extension because people often switch to a
lower resolution to watch video, so I can't just use
DisplayWidth/DisplayHeight.

  Any advice?

  -Billy


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