[argyllcms] Re: problem loading LUT-based icc profile to CRT

  • From: David Heinrich <dh003i@xxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Wed, 9 Dec 2009 17:23:34 -0500

Ok, me and Troy Sobotka (mostly him) figured out the issue. Argyll's dispwin
was operating on the wrong display! I wasn't specifying -d2, and I needed
to. Running

sudo dispwin -r -d1
sudo dispwin -r -d2

resolved it. with -d2, I noticed the CRT lightening and darkening. Not so
with -d1.

Graeme, thank you for his wonderful tool and your thoughts on the matter.

On Wed, Dec 9, 2009 at 2:29 PM, David Heinrich <dh003i@xxxxxxxxx> wrote:

>
>
> On Wed, Dec 9, 2009 at 3:26 AM, Graeme Gill <graeme@xxxxxxxxxxxxx> wrote:
>
>> David Heinrich wrote:
>>
>>> I've made a LUT-based profile and am trying to load it (where are they
>>> loaded anyways, system software, gpu, monitor?).
>>>
>>
>> The 'vcgt' tag is loaded into the graphic card hardware to calibrate
>> the monitor. It's up to applications to load the profile to access
>> the monitor characterization information, so that they are
>> able to transform colors into the calibrated monitors colorspace.
>>
>> See <http://www.argyllcms.com/doc/calvschar.html>
>>
>>
>>  When alternating between
>>> clearing profiles from the system and loading my LUT-based profile, I see
>>> a
>>> quick flicker on the screen (but not one of the audible ones where the
>>> CRT
>>> makes noise). However, I don't notice any change in my ~18% neutral gray
>>> desktop background.
>>>
>>
>> Maybe the monitor has a native characteristic very similar to
>> the calibration target ?
>>
>> Have you tried loading "strange.cal" from the argyll ref directory,
>> to get a more obvious visual indication that the calibration gets loaded ?
>>
>
> What do I do to do that?
>
>
>>  I have a Sony GDM-F520 CRT monitor, 2048x1536. xrandr reports detected
>>> EDID
>>> modes, so I'm not sure why I'm getting these weird "Failed to get EDID
>>> for
>>> display" messages. (DVI-I_2/analog is my CRT, I'm not using the other one
>>> at
>>> the moment).
>>> *
>>> $ sudo /opt/Argyll/bin/dispwin -v -c; dispwin -v -E 9 -V
>>> colprof-sony-gdm-f520-3000-patches-12-6-2009.icc*
>>>
>>
>>  Verify: 'colprof-sony-gdm-f520-3000-patches-12-6-2009.icc' is NOT loaded
>>> (discrepancy 12.2%)
>>>
>>
>>  *$ sudo /opt/Argyll/bin/dispwin -v -E 9 -I
>>>
>>> colprof-sony-gdm-f520-3000-patches-12-6-2009.icc ; dispwin -v -E 9 -V
>>> colprof-sony-gdm-f520-3000-patches-12-6-2009.icc*
>>>
>>
>>  Verify: 'colprof-sony-gdm-f520-3000-patches-12-6-2009.icc' IS loaded
>>> (discrepancy 0.0%)
>>>
>>
>> Seems like the calibration gets loaded as far as the software
>> is concerned.
>>
>
> Does that mean it is probably working? Any reason it wouldn't be if the
> software says it is?
>
>
>>
>>  *$ xrandr*
>>>
>>
>> Try running xrandr --prop and see whether you can see the EDID property.
>> Is it called "EDID_DATA" or something else ?
>> If it's not there or not accessible because it's called something else,
>> then that's why the warnings about it.
>>
>
> Here's the result, I see no EDIT or EDID_DATA field.
>
> $ xrandr --prop
>
> Screen 0: minimum 320 x 200, current 2048 x 1536, maximum 3840 x 3936
> DVI-I_1/digital connected 1920x1200+0+0 (normal left inverted right x axis
> y axis) 480mm x 300mm
>         _HDMI: 0 (0x00000000)   range:
> (0,1)
>         _Coherent: 0 (0x00000000)       range:
> (0,1)
>
> _PanningArea:
>
>         _OutputNumber: 1
> (0x00000001)
>         ConnectorNumber: 1
> (0x00000001)
>         ConnectorType:
> DVI-I
>         SignalFormat:
> TMDS
>                 supported:
> TMDS
>    3840x2400      12.7
> +
>    1920x2400
> 20.1
>
>    1920x1200
> 40.9*
>
>    1600x1200
> 59.9
>
>    1280x1024      75.0
> 59.9
>    1024x768       84.9     75.1     70.1
> 60.0
>    800x600        84.7     72.2     75.0     60.3
> 56.2
>    640x480        84.4     75.0     72.8
> 60.0
> DVI-I_1/analog disconnected (normal left inverted right x axis y
> axis)
>         _HDMI: 0 (0x00000000)   range:
> (0,1)
>         _Coherent: 0 (0x00000000)       range:
> (0,1)
>
> _PanningArea:
>
>         _OutputNumber: 2
> (0x00000002)
>         ConnectorNumber: 1
> (0x00000001)
>         ConnectorType:
> DVI-I
>         SignalFormat:
> VGA
>                 supported:
> VGA
> DVI-I_2/digital disconnected (normal left inverted right x axis y
> axis)
>         _HDMI: 0 (0x00000000)   range:
> (0,1)
>         _Coherent: 0 (0x00000000)       range:
> (0,1)
>
> _PanningArea:
>
>         _OutputNumber: 3
> (0x00000003)
>         ConnectorNumber: 2
> (0x00000002)
>         ConnectorType:
> DVI-I
>         SignalFormat:
> TMDS
>                 supported:
> TMDS
> DVI-I_2/analog connected 2048x1536+0+0 (normal left inverted right x axis y
> axis) 0mm x 0mm
>         _HDMI: 0 (0x00000000)   range:
> (0,1)
>         _Coherent: 0 (0x00000000)       range:
> (0,1)
>
> _PanningArea:
>
>         _OutputNumber: 4
> (0x00000004)
>         ConnectorNumber: 2
> (0x00000002)
>         ConnectorType:
> DVI-I
>         SignalFormat:
> VGA
>                 supported:
> VGA
>    2048x1536_73
> 73.0*+
>
>    2048x1536
> 60.0
>
>    1920x1440      75.0     60.0
>    1856x1392      75.0     60.0
>    1792x1344      75.0     60.0
>    1600x1200      85.0     75.0     70.0     65.0     60.0
>    1680x1050      84.9     74.9     69.9     60.0
>    1600x1024      60.2
>    1400x1050      85.0     74.8     70.0     60.0
>    1280x1024      85.0     75.0     60.0
>    1440x900       59.9
>    1280x960       85.0     60.0
>    1360x768       59.8
>    1152x864      100.0     85.1     85.0     75.0     75.0     70.0
> 60.0
>    1024x768       85.0     75.0     70.1     60.0     43.5
>    832x624        74.6
>    800x600        85.1     72.2     75.0     60.3     56.2
>    640x480        85.0     72.8     75.0     59.9
>    720x400        85.0
>    640x400        85.1
>    640x350        85.1
>
>
>
>>
>> Have you tried V1.1.0 RC2, it has a couple of fixes in this area, and
>> will locate the EDID data from either the "EDID_DATA" or "EDID" output
>> property.
>> (
>> http://www.freelists.org/post/argyllcms/ArgyllCMS-V110-RC2-is-now-available
>> )
>>
>
> Trying it now, will update on it.
>
>>
>> Graeme Gill.
>>
>>
>
>
> --
> Social sciences can never use experience to verify their statements --
> Ludwig von Mises
>



-- 
Social sciences can never use experience to verify their statements --
Ludwig von Mises

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