I heard many people complain about coil whine in these models. Also does this support GPU switching under Linux and does sleep/hibernate etc work without issues ?
I've haven't experienced the whine myself, but I've seen those complaints too.
GPU switching is the one thing I haven't really tried yet. I've stuck with the Intel chip. I've read that people have had success with Bumblebee. In fairness, I've also had a MacBook Pro with Fedora 19 on it, and GPU switching didn't work there either.
Suspend/resume work without issue, but I haven't installed the proprietary NVIDIA drivers yet, and those have a tendency to mess up resume (at least it did on my MBP w/ Fedora 19).
I _imagine_ NVIDIA drivers + suspend/resume works just fine with Ubuntu. Any "non-free" drivers in Fedora are pretty iffy in my experience. Usually after installing the NVIDIA drivers from RPM Fusion GDM won't even start, or you have to edit the GRUB menu item to blacklist nouveau, or any number of things the package should theoretically take care of for you. I've not had that problem with Ubuntu (just other problems, like a UEFI install on say a MBP, something Fedora does flawlessly).
These are the kinds of reasons people just use Windows or OS X I guess.
