[PD] four PS3 Eye on Mac Pro and Pd-ext and GEM

Jack jack at rybn.org
Thu May 19 11:00:28 CEST 2011

Thanx Mathieu,

I will give it a try with your tips.
I have started to install Ubuntu 10.04 on the Mac Pro and i think i will
use this OS.

In fact, i am crazy because i have installed two ATI Radeon HD 5770 on
this Mac Pro (version 5.1). Each card has 2 Mini Display Ports and 1 DVI
port. On the Apple website it is write each graphic card accept a
resolution of 2560x1600 px. When i plug 2 TV screen (HDMI and each
screen with 1280x768px) on the 2 Mini Display Port on one card (with an
adapter Mini Display Port/HDMI), it works fine. But if i use the second
card with the same configuration (so 4 TV screen on the 4 Mini Display
Port), it seems the computer have not enough power, the Finder quit each
10 second.
I use MacOSX.6.6 and this is not the lastest version (the lastest is
X.6.7 and maybe it is working with this version but now i have no time
to test this config).

With Ubuntu, the sytem start to load then the 4 screens stay black. I
have to unplug the 2 cables on one graphic card to boot normaly. So i
can only use 2 screens.

I don't know where is the problem (power ? Apple computers ?).
If someone have any experience on this problem, i will be happy to
listen him.

Now, the solution that i am going to use :
1 Mac Pro with Ubuntu and one graphic card (ATI Radeon HD 5770)
1 PC with Ubuntu and one graphic card (NVidia GT 440 or NVidia GTX 460)


Le mercredi 18 mai 2011 à 11:58 -0400, Mathieu Bouchard a écrit :
> On Wed, 18 May 2011, jack at rybn.org wrote:
> > I'm going to work on a Mac Pro with MacOsX.6.7 and the latest stable 
> > Pd-extended 0.42.5. I would like to connect four PS3 Eye on this 
> > computer and use GEM with pix_video to read these four devices in four 
> > instance of Pd (=> one camera per instance of pd). I will use Macam 
> > driver (or something else ?) Is it easy to get each camera working in 
> > the same time on this system ? Do you have experience in this area ?
> My experience with just one cam on OSX and Pd-extended 42 was that object 
> creation order mattered because each [pix_video] object automatically 
> opens the first available camera AND the "device 1" method didn't work. 
> So, to access only the 2nd camera, I had to create two objects and only 
> use the 2nd one.
> using 4 [pix_video] objects for 4 cameras may work, but they will be 
> assigned by creation order.
>   _______________________________________________________________________
> | Mathieu Bouchard ---- tél: +1.514.383.3801 ---- Villeray, Montréal, QC

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