Am 18.05.2014 16:24, schrieb Sanford Rockowitz: > When I perform a calibration, it's specific to the current settings of > the monitor: color temperature, RGB channel settings, brightness, etc. > Yet handling these settings is an out of band process. It's the user's > responsibility to manually adjust the monitor settings and record the > values before calibration, and restore them manually if necessary. At > the very least, it would be desirable to record those settings in the > profile, or even just have a utility that allowed me to record the > settings and possibly restore them. > > All this should be possible with DDC/CI, but DDC/CI doesn't seem to be > supported on Linux. There's ddccontrol, but it doesn't appear to have > been updated in years. When I try to run it, it doesn't recognize my > monitors or complains that the data returned is invalid. I've tried > using i2cdump. I can read the EDID data at address 0x50. My > understanding is that the DDC data is at address 0x30, but when I read > from that address I get nothing. xcmddc can identify the i2c buses for > monitors, but that's about it. The comments in XcmDDC suggest that much > greater capabilities were intended. > > Googling, I find a bunch of posts from Kae-Uwe Berman, Graeme Gill, > Richard Hughes and others circa 2009-2010 (e.g. > http://comments.gmane.org/gmane.comp.freedesktop.xorg/41559, > http://lists.x.org/archives/xorg-devel/2010-July/010922.html) Then > discussion of this topic seems to die. > > All this leads me to think that there's something fundamentally > problematic about using DDC/CI in Linux. Is that the case, or is there > a solution that I've overlooked? If no general solution is possible, is > there at least a path for me to cobble together something that works for > my specific monitors and systems?
xcmddc's intention was to make information available for automation of monitor settings to initially profiling software and colour management systems. I just did not had enough time to figure ddc/ci out. The EDID code is available in several stacks. DDC/CI in Linux needs attention of a developer. That's perhaps all needed. kind regards Kai-Uwe ------------------------------------------------------------------------------ "Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE Instantly run your Selenium tests across 300+ browser/OS combos. Get unparalleled scalability from the best Selenium testing platform available Simple to use. Nothing to install. Get started now for free." http://p.sf.net/sfu/SauceLabs _______________________________________________ Lcms-user mailing list Lcms-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lcms-user
