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Re: Dreamcolor LP2480zx on OS X 10.6.3

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Justin Heitman
Re: Dreamcolor LP2480zx on OS X 10.6.3
on May 13, 2012 at 11:39:23 pm

Ill go over a few things incase I tap on something you havent asked that may help oh and HP 'ARE' hopeless!! The tech support here was pathetic. They had no idea on their own product. There is a kernel update that was needed to recognise the probe, you may not have that issue though? I think this is the correct link

It took a heap of emails to get this resposnse : "Unfortunately we cannot calibrate the display unless we have both DDC/CI and USB connections to the display. That requires that the display be connected to the graphic card on the system running the calibration as DDC/CI communication runs through the DVI-D connection. The display absolutely supports a HD-SDI connection via an adapter such as the HDLink Pro, but only for image display, not for calibration communication as DDC/CI is not supported via HD-SDI.
That said, since the display has an internal color management engine and LUT/matrix memory space, even if you calibrate the display on a computer the calibration should be valid for all digital connections including connections to computers other than the one running the calibration software or a non-computer video connection"

Once I did the kernel update the puck / probe was recognised. The Dreamcolour has to be calibrated via the DVI out of the Mac. It does not get recognised if plugged in via any other source ie: HDLink or alike. So, that being said, I got the calibration to work but it was continually green. They had no answer for this either, with, after many emails, the conclusion being that the probe was faulty... it wasnt. What I found was that no matter what I did, everything had a green hue. To get through at the time I calibrated by eye using a 1D Lut in the HDLink or the Decklink card. What I found after ages of no answers or proper support, was that my old mac was the issues. Still not sure why, but when I plugged the monitor in to a newer mac, the Dreamcolor looked great without calibation! WT?! I still have no idea why.

Anyway, so, now I calibrate the Dreamcolor with a direct feed from the DVI out of my Mac. The probe sees it and does its thing ... eventually. It usually takes a few goes to get a calibration that Im happy with, which is rare. At factory default mine looks pretty good but not perfect. Once calibrated, I feed my Dreamolor DVI out from a HDLinkPro which is fed HDSDI from my Decklink.

I have used that HP Profiling software on my 24" Mac screens and they never come up the same. Not even close, and I mean to each other not to the Dreamcolor. Different colour space I know.

Not sure if any of that helped?

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