how to set twinscreen with different aspect ratio (and resolution)

Hi,

first sorry if this is not the best place to post but I did not find a better one…

I just bought an Asrock ION330 to to create (using Ubuntu 9.04) a “xbmc box” with a touchscreen for controlling it.

I’ve got a 15’’ touchscreen (4/3 screen running 1024x768@50Hz) and a Sanyo PLV-Z4 projector (16/9 running 720P@50Hz or 720P@60Hz)
15’’ monitor is connected using VGA wire and projector is connected through HDMI connection.

Using nvidia 180 drivers (and 185 drivers), I was able to configure correctly xbmc for it to run on one OR the other screen but… After having tweaked many times xorg.conf to get dual screen (by using twinview) and set 15’’ screen at 1024x768, and projector as 720P, my results are bad :

Depending of which screen is defined as primary in xorg.conf file :

  • if 15’’ screen is set as primary 1024x768, projector give 4/3 screen (I do not use the right part of the screen if you prefer as it is completely black) - display is fine on 15’’ screen.
  • if projector is set as primary 720P, and 15’’ screen is set at 800x600, 15’’ screen does not show top and bottom of the screen - display is fine on Sanyo projector.
    OR
  • if projector is set as primary 720P, and 15’’ screen is set at 1024x768, 15’’ screen does not show right part of the screen (I lost my mouse on the right part of the screen if you prefer) - display is fine on Sanyo projector.

Maybe another possibility would be to do a sort of “downscale” to 4/3 …

Anyhelp would be greatly appreciated

Regards,