Re: RE: FATAL ERROR: CUDA error in cudaGetDeviceCount on Pe 0 (thomasASUS): CUDA driver version is insufficient for CUDA runtime version

From: Thomas Evangelidis (
Date: Sun Sep 23 2012 - 11:33:31 CDT

Hi Jay,

Interesting. Before installing Fedora 17, I used Ubuntu 12.04 but had a
permanent resolution problem when I installed the NVIDIA drivers. I haven't
tried that trick with BIOS though. I will give it a shot in the near future.


On 23 September 2012 04:34, Roberts, Jason <> wrote:

> Hi Thomas,
> I we are running 2 laptops using Ubuntu, one with a 540M and the other
> with a 640M. To get around the driver issues associated with the "Optimus"
> technology I had to go into the BIOS at start-up and change the graphics
> card option to "Discrete" . This means that the system no longer uses the
> on-board Intel HD graphics chip and runs entirely on the nVidia GPU, which
> solved our problems. From my understanding nVidia are in the process of
> deriving a solution for using Optimus in a Linux environment, but until
> then the only options I know of are independent solutions which I've found
> cause problems when running some programs which use CUDA extensions.
> So far I have found no real problems with running the systems on the
> nVidia GPUs permanently, the systems are more stable but there is a minor
> drop in battery time.
> Cheers,
> Jay
> Jason A. Roberts
> Senior Medical Scientist
> National Enterovirus Reference Laboratory
> WHO Poliomyelitis Regional Reference Laboratory
> VIDRL, 10 Wreckyn Street,
> North Melbourne, Australia, 3051
> Phone: +613 9342 2607
> Fax: +613 9342 2665
> email: (lab enquiries)
> web site:

Thomas Evangelidis
PhD student
University of Athens
Faculty of Pharmacy
Department of Pharmaceutical Chemistry
157 71 Athens


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