So I now have my first profile, with vcgt tag included. Color errors are within acceptable range (err = 4.639393, avg err = 1.193249). At this point have another set of questions: * During several runs of dispcal and dispread, I get EEprom errors: Failed to convert EEProm white data to calibration or Updating the calibration and log parameters to EEProm failed Are those anything to be concerned about ? * I am now trying to grasp how I can have some tool load the video LUT automatically from the vcgt tag. The documentation explains the use of dispwin or xcalib. But it only explains how to call these tools manually. I would like to have this installed/configured in such a way that these are always called automatically at appropriate times. At first I naively thought that running this once at the start of X11 would fix it. But after reading through the list archives it seems there are a lot of cases where the LUT get overridden, like: - screensaver activity - powersave activity - switch to console - ... What are the best recommendations to deal with this ? And what are the pitfalls ? Thank you, Geert -- Kobalt W.I.T. Web & Information Technology Brusselsesteenweg 152 1850 Grimbergen Tel : +32 479 339 655 Email: info@xxxxxxxxxxxx