[lug] RHEL 6 Nouveau versus Nvidia for graphics

Steven A Hart shart at Colorado.EDU
Mon Jan 23 12:13:24 MST 2012

  Just a follow up on this.  I disabled Nouveau and installed the latest 
NVIDIA drivers but it's acting a bit wonky.  Here's what I did:

- created /*/etc/modprobe.d/disable-nouveau.conf*/ which contains the 
following line:
blacklist nouveau options nouveau modeset=0

- Then I modified /*/etc/grub.conf */so that the Kernel vmlinuz line 
ended with:

- Then I rebooted and manually installed the NVIDIA drivers as I usually 
do.  The installer ran normally and modified the /etc/X11/xorg.conf as 

- Brought the system up to telinit 5 and graphics work normally using 
NVIDIA.  Acceleration is active and looks good.

Now here's the wonky part.  I log off to get back to the login screen 
and the graphics wig out.  Everything gets choppy and distorted.  I 
tried ctrl-alt-f2 and was barely able to make out the words printed on 
the screen.  I tried going down to telinit 3 and then back up to telinit 
5 but that did nothing.  I had to reboot the system which resulted in 
graphics running normally again.  The problem repeats when I log in and 
then log off.  Everything is cool until I log off graphically at the 

This is all new hardware:

GIGABYTE GV-N440D3-1GI GeForce GT 440 Video Card
GIGABYTE GA-Z68XP-UD3 motherboard
Intel Core i7-2600K Sandy Bridge 3.4GHz processor
ASUS VE276Q 27" monitor

Everything graphical worked normally using Nouveau.  Could I have missed 
a setting and the system is trying to load something Nouveau related and 
wigging out?

Any ideas would be appreciated....



On 01/20/2012 04:45 PM, Quentin Hartman wrote:
> In my experience, not on RHEL mind you, Nouveau "works", but is
> generally slower than the proprietary drivers. I also believe (though
> this may not be true) all the advanced CUDA and other processing
> capabilities of the card are unavailable without the official drivers.
> While I respect Nouveau from a philosophical standpoint, I've found
> that I've always been better off just using the official drivers. That
> said, it's been well over 2 years since I last played with them, so
> things may have changed quite a lot in that time.
> On Fri, Jan 20, 2012 at 10:25 AM, Steven A Hart<shart at colorado.edu>  wrote:
>> I loaded up a new RHEL 6 system and by default the Nouveau graphics took
>> control.  It looks accelerated but I'm worried about it handling higher end
>> graphics.  The system uses a decent NVIDIA card.  Is the Nouveau graphics
>> just as good, better, or worse than the drivers provided by NVIDIA?
>> I'm not 100% familiar with the Nouveau graphics so thought someone here had
>> more experience with it.
>> This is not a gaming system but the graphics requirements are similar to
>> that of a gaming system.
>> Thanks
>> Steve
>> --
>> Steve Hart
>> Systems Administrator
>> Colorado Center for Astrodynamics Research
>> University of Colorado Boulder
>> Steven.Hart at colorado.edu
>> (303)492-8109
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Steve Hart
Systems Administrator
Colorado Center for Astrodynamics Research
University of Colorado Boulder
Steven.Hart at colorado.edu
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