David Heinrich wrote:
I've made a LUT-based profile and am trying to load it (where are theyloaded 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 ?
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.
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. 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) Graeme Gill.