Color management on the Nexus 7 does not work
I am reporting live from the Color Management Hackfest in Brno. Having several color calibration devices for the screen here and after successfully calibrating my Lenovo T400 laptop running Quantal, I tried the same with the Nexus 7, using a Huey color calibration device.
I had to install gnome-color-manager manually on both systems. The "Color" part in the System Settings was not able to install it.
The device is correctly recognized and in the "Color" part the System Settings enables the "Calibrate" button. When I click it, the calibration tool pops up and I attach the device to the square on the screen and start the wizard. All works correctly until the tool starts to check the observed values. In the middle of this stuff the measuring process seems to crash as the square suddenly disappears. The main window of the calibration tool shows a read error, probably because the measuring process has gone away.
Another observation is that it is not possible to apply an existing ICC profile to the screen. The attached profile applied with the "Colors" part of the System Settings should make the screen bluish which does not happen.
If the problem is that the NVIDIA GPU does not support color calibration at all, color management tools should be removed of the Nexus 7 version of Ubuntu, otherwise these issues need to get fixed.