Q: Calibration colour change between the two graphical card on Yosemite

Hello

I have upgraded my Osx to Yosemite, and since that day when some applications run (viber or photoshop or VLC.....) it appears that the sceen turned on cooler color, after some research yosemite settings i realised that the graphical card is switching on to the external graphical card, when some of those app run. In Mavericks i've never noticed this problem, problem because when i postprod my works on photoshop the cooler color will going wrong my job

did someone experienced this problem ?

My apologise , i have to perform my english