[OpenICC] monitor/videocard identification

[Kai-Uwe Behrmann]

Ben,

at the most involving Oyranos could use an external hardware calibration
library to indentifiy monitors and graphic cards. Currently I think of the
project as an configuration system, later extensible about more
components.
Even I agree with You hardware detection is an important task.
Oyranos itself is not an good place for hardware detection.

What does the X people think about an external system, configuring X
colour internals? Xcalib could be such an application taking arguments
from Oyranos.

regards
Kai-Uwe Behrmann
                                + imaging development / panoramas
                                + color management
                                + email: ku.b at gmx.de
                                + CMS proposal <www.behrmann.name>


Am 05.12.04, 09:33 -0500 schrieb Ben Guthro:

> I have been looking into a solution such as this for the past couple of
> years
>
> knowing which monitor is attached to which graphics card, associated
> with what coordinates  has been a problem under *nix in my development
> so far for a display calibration system.
>
> For those displays that support it, the EDID information can be
> obtained via i2c-dev, with the proper command set. X does support this
> to a certain degree on certain graphics boards by setting an X atom
> containing the EDID information. However, this becomes problematic in a
> Xinerama solution where only one display object is exposed.
>
> Adjusting other DDC controls (Brightness, contrast, color gains) of a
> DDC/ci capable display can be achieved via the i2c-dev kernel module
> with the correct application calls.

Does someone know where to find documentation and/or sample code?

> Associating an ICC profile with a particular display is somewhere that
> seems to be currently lacking in linux. The xf86vmSetGammaRamp (I think
> thats the call) specifies one display object, and again in a Xinerama
> solution, only one is exposed. Therefore only one gamma ramp may be set
> for both displays.
>
> If Oyranos could expose any of this functionality any better than it is
> currently, I think that it would make for some drastic improvements in
> the capabilities of the color management solution.
>
>
> Ben
>
>
> Ben Guthro
> Software Engineer
> Center of Excellence for Display Technologies
> a Gretag Macbeth Company
> 603.681.0315 x234
>
>