I’m getting a 404 on that link. I’ll try it again later. FYI: This is the same hardware that I have used with argyll (via dispcalGUI) many times (A 15” Retina Macbook Pro), so it can’t be a hardware difference. On Oct 17, 2013, at 8:03 PM, Graeme Gill <graeme@xxxxxxxxxxxxx> wrote: > Martin Diers wrote: > >> CGGetDisplayTransferByTable number of entries mismatches screen depth > > Hi, > that hints it's a hardware difference issue - > perhaps the frame buffer is floating point using the GPU ? > > I've added some extra debugging with these version of the > display tools: > <http://www.argyllcms.com/disptools_osx64.tgz> > > See what the debug output of that looks like. > > Graeme Gill. >