[argyllcms] Re: problem loading LUT-based icc profile to CRT
- From: David Heinrich <dh003i@xxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Wed, 9 Dec 2009 14:29:09 -0500
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.
> (
> //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
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