[lug] RHEL 6 Nouveau versus Nvidia for graphics

Steven A Hart shart at Colorado.EDU
Mon Jan 23 13:19:25 MST 2012

  I just tried it with DVI and it still does the same thing.  For the 
most part the error is the same.  The board is new and no updates are 
available for the BIOS.

I might be able to live with the nouveau drivers but I'm going to bang 
away on this for a bit before I give up.

Could it be the NVIDIA driver itself?  I may try to load up a previous 
driver juts to see what happens.

Thanks for the ideas!


On 01/23/2012 01:15 PM, Quentin Hartman wrote:
> <Snip weirdness>
> Wow, that is weird. I assume your X config is setup to be all
> automagical? Does the problem persist if you don't use HDMI and switch
> to DVI or the like instead?
> Based on what you describe it almost looks like the unloading and
> reloading of the X drivers (which happens when you out and in since
> the session restarts) is putting the hardware into a bad state. It
> almost looks like device address mapping awry.
> I'd also check to see if there is a BIOS update available for your
> motherboard. The only time I've ever seen problems remotely like this
> a misbehaving BIOS was the root cause. Sometimes you can pass the
> kernel parameters to work around it, but there's usually a performance
> or efficiency price to pay when you go that route.
> If there is no updated BIOS, or if there is and it doesn't fix the
> problem, I'd suggest going back to Nouveau if it meets your needs
> rather than spend a bunch of time banging your head trying to get
> "extras" working.
> QH

Steve Hart
Systems Administrator
Colorado Center for Astrodynamics Research
University of Colorado Boulder
Steven.Hart at colorado.edu
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