From: Roberts, Jason (Jason.Roberts_at_mh.org.au)
Date: Sat Sep 22 2012 - 20:34:50 CDT
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: polio_at_mh.org.au (lab enquiries)
web site: http://www.vidrl.org.au/labsandunits/polio/polio_activity.htm
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