W510/W520 FHD, color profile supplied by Lenovo is wrong (sRGB clone, not wide gamut)

Question

Hi!
I think I discovered a problem with the monitor profile for Thinkpad 95% gamut FHD LCDs:
The "TPLCD95.icm" monitor profile for FHD 95% gamut LCDs seems to be just a copy of the default sRGB profile. Thus it is likely not a calibrated representation of these screens!
This defect has been there since version 4.33 and is still in the latest version 4.35 of the "Monitor file for Windows 7 (32-bit,64-bit), Vista (32-bit,64-bit), XP (32-bit,64-bit) and 2000 - ThinkPad" package, http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=MIGR-62923
In contrast, the "TPLCD60.ICM" and "TPLCD100.ICM" files of other screen types appear to be proper. Lenovo should provide a similarly produced "TPLCD95.ICM" file and update the drivers! (For the poor people without built-in color sensor.)
Some proof for the unconvinced why the "TPLCD95.icm" profile is not proper (just an sRGB clone):
* The RGB colorants are exactly the same in the "TPLCD95.icm" and "sRGB Color Space Profile.icm" files, e.g. gXYZ = 0.385,0.717,0.097. (In "TPLCD100.ICM" the gXYZ colorant is 0.226,0.680,0.094 and in "AdobeRGB1998.icc" it is 0.205,0.626,0.061.)
* The tone repro curves of "TPLCD95.icm" and "sRGB" are both 1024 elements and identical for rTRC, gTRC and bTRC. (In the "TPLCD100.ICM" file it consists of only 9 points, presumably measured, and there are different curves for R, G and B.)
* The suffix of "TPLCD95.icm" file is in lowercase letters, indicating that it was made in a different workflow than the "TPLCD100.ICM" and "TPLCD60.ICM files". Also the file sizes are very different.
* By experiment: Set the monitor profile to "TPLCD95.icm" and open an image in Windows Photo Viewer (for example the Chrysanthemum.jpg image from the Sample Pictures folder in Win7). Then repeat with sRGB as monitor profile, you'll get the same color. Repeat with "TPLCD100.ICM" to get a reduced gamut, as expected from a wide gamut profile. That's how "TPLCD95.icm" should be too, except of course calibrated for the 95% gamut LCD not 100% RGBLED.
In the meanwhile, could anyone with a sensor calibrated W510/W520 95% gamut FHD screen care to share their ICM/ICC file?
Yours,
Mikael Sterner

Answer 1

As a workaround, I can suggest the excellent QuickMonitorProfile tool by Eberhard Werle: http://quickgamma.de/QuickMonitorProfile/indexen.html
It can create a profile just based on the rgb chromaticities, white point and gamma in the EDID information from the monitor. On my W520 FHD it reads out rxy=0.676/0.314, gxy=0.215/0.665, bxy=0.141/0.069, wp=D65, gamma=2.2. This matches what is in the LCD panel datasheet: http://www.notebook-lcd.ru/pdf/B156HW01_V_4.pdf
The created synthetic profile is better than nothing, and is the minimum what Lenovo should have included.