Color Management, Linux, Photoshop C2 via Wine

"I've just done a little experiment with PS CS2 under wine (wine 1.1.42~winehq0~ubuntu~8.04-0ubuntu1 and Nvidia proprietary driver with twinview). I've got an NEC wide-gamut monitor (LCD 2690wuxi2) and I generated a profile for it using an X-rite Eye-one Display LT colorimeter with the Argyll tools - http://www.argyllcms.com/ . Incidentally, I first tried using a Pantone Huey colorimeter, and the results were bad - seems like the Huey works badly with wide-gamut monitors. The Nvidia proprietary driver doesn't currently allow for setting the video card LUTs for each monitor independently, so I'm applying the profile for my NEC to both monitors.

The experiment is basically this:

load profile using dispwin -L $profile
start Photoshop, open a test image containing saturated colours (especially 100% red), observe colours, and exit
unload profile using dispwin -U $profile
start Photoshop, open test image, observe colours again, and exit

With the profile loaded, the colours look good, and closely match those shown by other colour-managed apps (e.g. gimp, Firefox with CM enabled).
With the profile unloaded, the colours are wildly saturated, as you would expect to see when a wide-gamut monitor is displaying something intended for sRGB.

So it seems PS CS2 under wine uses the monitor profile installed by dispwin. I suspect it's using the X11 _ICC_PROFILE property that dispwin installs (use

xprop -root | fgrep _ICC

to see it) as strace on Photoshop revealed it wasn't opening any of my own .icc files.

Note that dispwin -I ""installs"" the profile (i.e. sets the X11 _ICC_PROFILE property) and also adjusts the video card LUTs (which I think is accomplished in the Windows world with the Adobe gamma loader).

Hope this helps"