Quoting Toby Corkindale (toby@dryft.net):
Could you give Ubuntu Desktop Edition a try? I think they put more work into ensuring closed-source drivers such as those are working with their shipped kernels and X versions.
In which case, I'd imagine it'd be easier for Lindsay to grab the debs for the Ubuntu vendor kernel and try it on his Debian 7.1 Wheezy installation. Lindsay says 'I use a custom kernel current version is 3.9.11'. It would be nice if Nvidia would bother indicating on http://www.nvidia.com/object/unix.html what kernel they test their proprietary patches against, but they don't. Wankers. https://wiki.gentoo.org/wiki/NVidia/nvidia-drivers#Kernel_compatibility recommends 'stick with the newest supported kernel for a while', and that Nvidia take a few weeks to catch up with kernel changes. That's certainly not specific, but conveys the general idea. I have a feeling Lindsay isn't using a Debian vendor kernel either, but rather one from somewhere else, e.g., compiled locally from kernel.org source. I'll bet the likes of this might do, for example: http://ftp.debian.org/debian/pool/main/l/linux-latest/linux-image-2.6-amd64_... Or, even better, backports. http://www.neowin.net/forum/topic/1162482-debian-backport-kernel/ Of course, Lindsay might have a compelling reason to need specifically 3.9.11, in which case he might need to wait for Nvidia to catch up.