We are forced to use the Nvidia proprietary driver for two reasons:

1.  We use the switched stereoscopic 3D mode of "professional" Nvidia 
video cards with the external Nvidia 3D switching emitter for the 
stereoscopic 3D "shutter glass" mode of various applications that 
display stereoscopic 3D images (both still and motion).

2.  We need to load Nvidia CUDA in order to use the CUDA computational 
functions of Nvidia GPU compute cards in our GPU based compute engines. 
  The Nvidia CUDA system appears to require the proprietary Nvidia driver.

My understanding is that only the Nvidia proprietary driver supports 
both of these functionalities across the board of all applications that 
will run natively on Linux (some of which are not under the GPL or 
equivalent).

Yasha Karant

On 03/25/2013 08:02 AM, Robert Blair wrote:
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> Thanks.  I suspect, however, that the issues identified by this don't
> apply since the two cards were a GT240 and a GT220 which are not part of
> the legacy group that this is meant to help with.  I'm sort of committed
> to moving to nouveau since it weans me from these awkward special
> support modes and nouveau appears to have reached a reasonable level of
> maturity.  I've been using nouveau on a laptop with an add on monitor
> for some time now and find it a bit better than the nvidia twinview
> stuff.  This is not to mention that disentangling the proprietary
> drivers is a bit painful.  Returning to the nvidia proprietary approach
> would have to have certain success to be worth going back.  At the
> moment I have stable operation with two screens and can live this way.
>
>
> On 03/25/2013 09:53 AM, Andras Horvath wrote:
>> Bob,
>>
>> Elrepo announced not long ago the availability of the nvidia-detect
>> package from their repository. I suggest you to take a look at that.
>>
>> The relevant mail:
>> http://lists.elrepo.org/pipermail/elrepo/2013-February/001652.html
>>
>> Andras
>>
>>
>> On Mon, 25 Mar 2013 09:36:12 -0500
>> Robert Blair <[log in to unmask]> wrote:
>>
>> I have an SL6 system which uses the epel nvidia kmod modules.  Just
>> recently X began crashing whenever a flash or other video is played. I
>> presume this is related to the most recent kernel update. The system
>> was a bit unusual in that it had two video cards and four monitors.
>> Is this unique to my setup or have others observed this?
>>
>> As a follow up I converted to the nouveau driver which doesn't have
>> this problem but I have yet to get the system to drive more than two
>> monitors off one card.  Anyone know of a good resource for
>> multicard/monitor nouveau setup/troubleshooting?
>>
>> Cheers,
>> Bob Blair
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