Vista 32 bit display driver for small lcd's on USB

Hi

I need to make a solution which permits having secondary monitors on USB
(small
ones - vga/qvga)

As far as I seen the display driver model has changed completly from the XP.
Does anybody know a good startpoint for a vista display driver?
The R200Sample from the WDK is a good starting point?

A second problem is that Vista does not permits having two WDDM display
drivers from different vendors. Does anybody knows solutions for this?

XPDM is not really an option (only last one) since it switches off aero on
primary monitor too which is something would need to avoid ...

regards,
--
-Barni

Ivan
Wed Jan 30 03:52:47 CST 2008

There is no solution to your problem in WDDM, not untill etherogenoeus
adapter
support comes along in the Vista-OS succcessor.

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"Barna Csenteri" <BarnaCsenteri@discussions.microsoft.com> wrote in message
news:DB8398CB-757E-4FEF-942C-D123B3DCEDAD@microsoft.com...
> Hi
>
> I need to make a solution which permits having secondary monitors on USB
> (small
> ones - vga/qvga)
>
> As far as I seen the display driver model has changed completly from the
> XP.
> Does anybody know a good startpoint for a vista display driver?
> The R200Sample from the WDK is a good starting point?
>
> A second problem is that Vista does not permits having two WDDM display
> drivers from different vendors. Does anybody knows solutions for this?
>
> XPDM is not really an option (only last one) since it switches off aero on
> primary monitor too which is something would need to avoid ...
>
> regards,
> --
> -Barni

BarnaCsenteri
Wed Jan 30 05:17:07 CST 2008

> There is no solution to your problem in WDDM, not untill etherogenoeus

That's what I also thought reading the WDDM docs.

What makes me confused though is Displaylink's vga2usb adapter which works
having aero on both primary and secondary monitor ... Which means that there
is a possible way doing it.

--
-Barni

Ivan
Wed Jan 30 06:07:55 CST 2008

My take is that they `wrap` dxgkrnl.sys and they install a companion
user-mode driver that wraps which-ever user-mode driver
used by the Direct3D runtime.
I doubt that their solution is going to work for more than
the number of video-present-paths already supported by
the original hardware, but, that's an educated guess.

--

--
This posting is provided "AS IS" with no warranties, and confers no rights.
Use of any included script samples are subject to the terms specified at
http://www.microsoft.com/info/cpyright.htm


"Barna Csenteri" <BarnaCsenteri@discussions.microsoft.com> wrote in message
news:4E413378-8B3C-495B-81A8-C74701405C25@microsoft.com...
>> There is no solution to your problem in WDDM, not untill etherogenoeus
>
> That's what I also thought reading the WDDM docs.
>
> What makes me confused though is Displaylink's vga2usb adapter which works
> having aero on both primary and secondary monitor ... Which means that
> there
> is a possible way doing it.
>
> --
> -Barni