[argyllcms] Re: Profiling my Lenovo X61 display

On Fri, Jan 22, 2010 at 1:49 AM, Alastair M. Robinson
<profiling@xxxxxxxxxxxxxxxxxxxxxxx> wrote:
> Hi :)
>
> Pedro Côrte-Real wrote:
>
>> When dispread starts reading patches the grey in the display turns
>> brown and the end result ends up being like that.
>
> How are you evaluating that display?  Are you displaying a grey image, and
> if so, does the program doing the displaying support colour management?
>
> I'm wondering if the profile you created without calibration information is
> still loaded.  If so, programs using that profile will be correcting against
> the blue cast on the screen, separately from the calibration, so when you
> load the new calibration curve that correction is being applied twice, and
> thus it's overshooting, making greys brown.
>
> If you install and load the newly-created profile that includes calibration
> data, then quit and restart any colour-management-aware software, does the
> problem go away?
>
>> So I'm assuming that
>> dispcal is not producing an adequate .cal file. Anything I'm doing
>> wrong? Is there any White/Black point setting I'm missing?
>
> You can test the .cal file in isolation like this:
>
> dispwin -c
>
> (Clears the calibration tables, returns the screen to uncalibrated state.
>  Check that you're seeing bluish rather than corrected greys.)
>
> dispwin X61.cal
>
> (Loads the calibration table - check your greys once more.)
> One other minor point - you probably want -cmt -dmt in your colprof line,
> rather than -cpp -dmt.  That's a side-issue though, and shouldn't be
> throwing off your greys.

I've tried pretty much the same thing. Where I'm seeing all the brown
is not only in the images but primarily in my gnome panel and
terminal, where no color management is involved at all.

Pedro

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