[ydl-gen] G5 dual, 2.7 GHz 20" Cinema Display

[Derick Centeno]

Greetings Dr. Freysinger:

I was wondering if you were willing to try a different approach.

Nvidia, just like other graphics companies does support Linux but 
typically not Linux running on the PowerPC (see here: 
http://www.nvidia.com/object/unix.html).  As they own the licenses to 
their hardware and the binaries for the drivers they do allow for 
download you will of course note that their drivers for other versions 
of Linux may not be reverse engineered.  This may mean you are left 
with writing to Nvidia directly requesting permission that they develop 
or allow you to develop the necessary driver software.  At least if you 
ask, it'll put them on notice that this (maintaining and supporting 
development for Linux on the PowerPC) is an issue for them to pay 
attention to.

Scientists such as yourself know better than I, the technical arguments 
of the PowerPC v. Intel arch.  Not all the sciences need to utilize 
these differences together with the flexibility Linux provides for 
their respective area of research.  For those who choose to utilize the 
PowerPC to maximize their research, current policies or prejudices by 
otherwise outstanding companies like Nvidia must be extremely 
frustrating.  This frustration and Nvidia's potential to relieve it, 
needs to be emphasized and clarified to their management.

This view or approach may not work, but consider this... if you don't 
pursue this challenge to their management so that they consider the 
choice of expanding the Linux drivers they support, you may just have 
to switch not only to Intel and Red Hat... but a lower order of 
scientific performance as well.

Again the argument arises, why should Nvidia frustrate your choices of 
hardware regarding high-level and high-end scientific research?

As someone who has engaged in some technical writing work, if I can be 
of assistance, feel free to contact me directly.

Best wishes....

On Jul 18, 2006, at 4:37 AM, Wolfgang Freysinger Innsbruck Medical U 
wrote:

> Hi there everyone!
> We have quite nice machine (G5 dual, 8 GB RAM, 20" Cinema display, 
> graphics card that should be supported by YDL 4.1) that we (plan to) 
> use for some "large-size" image processing tasks (image stacks of some 
> GB). Unfortunatley, there is no 3D-acceleration support, let alone can 
> we use the display. Just blurred.
> After some long period of fiddling, we still cannot use the display 
> and come to the following conclusion:
>
> The X-windows configuration should be read from /etc/X11/Xorg.conf 
> Actually, it seems to read from somewhere else:
> the settings of the Xorg.conf and those of the GUI tool (right mouse 
> click on the desktop, e.g.) do not read equeal.
> The GUI-config tools do not show an item like 20" Cinema Display.
>
> We were able to get something like a readable display. However, the 
> problem seems to be the frequency, most likely the horizontal 
> "frequeny"
> of the display. We still have to run the machine on the second monitor 
> of the dual display. A pity.
>
> Did someone get a system like ours ever to work properly?
> We tried all YDL suggested an more, no success.
> Does anyone have a clue?
> We have run out of ideas.
> Thanks
>
> Wolfgang Freysinger
> assoc. prof., medical physicist
> 4D Visualization
> Univ. ENT Clinic
> Departement of ENT Diseases & Voice, Speech and Hearing Disorders
> Innbruck Medical University
> Anichstr. 35, A-6020 Innsbruck, Austria
>
> tel.:  +43 512 504 22314, fax.: +43 512 504 25231
> Wolfgang.Freysinger at uibk.ac.at
> http://www.i-med.ac.at/igdt
> new!!  http://www2.uibk.ac.at/test/610-1/c53108/
> new!!  http://www.cas-h-international.org/2007
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