Please could an Nvidia representative clear this up as there is a great deal of confusion around this issue.
I am running Ubuntu 14.04 LTS using Nvidia 331.38 drivers from nvidia-331-updates on a GTX 690. CompizConfig Settings Manager shows that the Composite plugin detects the refresh rate as 50Hz which is confirmed by the terminal command “dconf read /org/compiz/profiles/unity/plugins/composite/refresh-rate”.
Now, I know that my monitor is running at 60Hz and that nvidia-settings confirms that.
However, my question is about compiz: is Compiz running at 50fps/Hz or is the reported refresh rate cosmetic and has no effect on compiz or anything else?
The Ubuntu community is very confused about this issue and there are numerous bug reports about it where the “problem” is fixed and then there is a regression and it happens again, then is fixed again etc etc.
Also, people report that manually specifying a refresh rate of 60Hz for compiz in CCSM makes moving windows around the desktop much smoother where before it was stuttery. I haven’t noticed much difference myself, 60Hz may have been slightly smoother but that might be the placebo effect talking.
So, are these people experiencing a placebo effect and compiz is actually running at 60FPS/Hz or should everyone manually set compiz’s refresh rate to 60Hz using CCSM?