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Re: Issue with 6.3, Mac OS X 10.4, 3 displays, X11 [message #50795 is a reply to message #50784] Wed, 18 October 2006 03:11 Go to previous messageGo to previous message
Karsten Rodenacker is currently offline  Karsten Rodenacker
Messages: 98
Registered: July 1997
Member
Perhaps my two cents to this topic too.

I have only one graphicscard with two displays on a PowerPC Dual and on my
powerbook.
Windows can only be opened or resized up to the size of the display where
the window resides.
IDLsysmonitorinfo shows two screens.
print,o->getrectangles()
1680 22 1920 1178
0 73 1680 1050
e.g. on my notebook.
xdpyinfo shows one screen 3200x1200 or 3600x1200.
All that is quite interesting for me beside the occasionally hanging
system by a lost sync.
Possibly we can await some improvements in MM (Multi-Monitor, but also
Mathematical Morphology)!
Regards
Karsten

Am Tue, 17 Oct 2006 15:03:26 +0200 schrieb Joseph B. Gurman
<gurman@gsfc.nasa.gov>:

> This one is currently stumping the ITTvis support folks, so I
> thought I'd see if anyone else had stumbled upon it.
>
> We're using a PowerMac G5 Quad with an NVIDIA Quadro 4500 (2 x
> DualLink DVI) video card to drive two Apple 30-inch Cinema HD Displays
> (2560 x 1600 LCD), plus an NVIDIA GeForce 6600 to run a smaller flat
> panel (1280 x 1024 native res. LCD). The two large displays, which will
> be mounted on a hallway wall, are meant to display time-lapse movies
> from the imaging instruments (which have 2048 x 2048 detectors) on the
> twin STEREO spacecraft, due for launch next week; the smaller display is
> for control (e.g. a Terminal window to run IDL).
>
> When we use the old PowerLan eXodus X11 implementation, we can get a
> single, large, X11 window that spans the two large displays. Animation,
> however, is slow, so we turned to Apple's X11, which for some reason
> responds to an IDL request of the form:
>
> IDL> window, 0, xsize = 4400, ysize = 1500
>
> with a considerably smaller window (~ 1200 x 960), on one of the large
> displays. Curiously, the small window can be expanded by dragging on the
> control tab at the lower right corner, but not beyond the boundaries of
> that single display.
>
> xdpyinfo indicates that our X11 setup does include Xinerama
> (screen-spanning) support, so my suspicion now focuses on X11 limiting
> itself to the size of the small display despite putting the window on
> one of the large displays. I may remove the GeForce and see if a
> single-card, two-display configuration behaves differently.
>
> I realize not many folks on this group are likely to have two
> display cards and two massive displays, but if you do (regardless of
> platform), I'd be interested to hear if you've experienced similar
> issues.
>
> Thanks in advance,
>
> Joe Gurman
>



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