I have a Dell Inspiron 15 3000 series, with an Intel HD5500 graphics card, running Ubuntu 14.04. My problem is that the colors on the screen are all washed out. They also look too blue. I have tried adjusting gamma and contrast using xcalib, but all it does is make the problem worse. I have also tried using Gnome Color Manager, but the calibration button is grayed out. I've looked on the Intel website for different drivers, but they only list basic development drivers with no support.
I can use xgamma to increase or decrease the gamma, and this does help, but what I really need is to increase the contrast. Contrast, via xcalib, is already 100%. It seems, with xcalib, all I can do is lower values, when what I need to do is increase them. Can anyone help with this? Thanks.