Hi Przemas,

> Looking at your specs - are you sure you've been running it on an Nvidia GPU?

Pretty sure - the information I posted came directly from the "System Information" OS dialog and there were options to switch between Nouveau or the proprietary driver.


> I've noticed that you have GTX750M which suggests a discrete GPU on an Optimus
> enabled laptop - which would default on Linux to intel card without a bit of trickery.

It's a slightly older iMac. I was hoping it might reproduce your problem as well as a Mac specific problem.

- Michael