Updating my Xorg on RHEL 6 etc

[Dennis Clarke]

> you can install a second X server from git (or anywhere) next to your
> existing one:
> http://who-t.blogspot.com.au/2012/05/testing-x-servers-from-git.html

side question, who in your opinion makes the absolute best graphics hardware 
avail for the niX and X world ?  Seriously, your opinion. 

I currently have : 

$ lspci | grep -i quadro
07:00.0 VGA compatible controller: NVIDIA Corporation G71GL [Quadro FX 3500] (rev a1)

With xdpyinfo claims : 

sedna.adbs.ca $ xdpyinfo 
name of display:    :0.0
version number:    11.0
vendor string:    Red Hat, Inc.
vendor release number:    11006000
maximum request size:  16777212 bytes
motion buffer size:  256
bitmap unit, bit order, padding:    32, LSBFirst, 32
image byte order:    LSBFirst
number of supported pixmap formats:    7
supported pixmap formats:
    depth 1, bits_per_pixel 1, scanline_pad 32
    depth 4, bits_per_pixel 8, scanline_pad 32
    depth 8, bits_per_pixel 8, scanline_pad 32
    depth 15, bits_per_pixel 16, scanline_pad 32
    depth 16, bits_per_pixel 16, scanline_pad 32
    depth 24, bits_per_pixel 32, scanline_pad 32
    depth 32, bits_per_pixel 32, scanline_pad 32
keycode range:    minimum 8, maximum 255
focus:  window 0x5200022, revert to PointerRoot
number of extensions:    27
    BIG-REQUESTS
    Composite
    DAMAGE
    DOUBLE-BUFFER
    DPMS
    DRI2
    GLX
    Generic Event Extension
    MIT-SCREEN-SAVER
    MIT-SHM
    RANDR
    RECORD
    RENDER
    SGI-GLX
    SHAPE
    SYNC
    X-Resource
    XC-MISC
    XFIXES
    XFree86-DGA
    XFree86-VidModeExtension
    XINERAMA
    XInputExtension
    XKEYBOARD
    XTEST
    XVideo
    XVideo-MotionCompensation
default screen number:    0
number of screens:    1

screen #0:
  dimensions:    3320x1080 pixels (878x285 millimeters)
  resolution:    96x96 dots per inch
  depths (7):    24, 1, 4, 8, 15, 16, 32
  root window id:    0x16a
  depth of root window:    24 planes
  number of colormaps:    minimum 1, maximum 1
  default colormap:    0x20
  default number of colormap cells:    256
  preallocated pixels:    black 0, white 16777215
  options:    backing-store NO, save-unders NO
  largest cursor:    64x64
  current input event mask:    0xfa8033
    KeyPressMask             KeyReleaseMask           EnterWindowMask          
    LeaveWindowMask          ExposureMask             StructureNotifyMask      
    SubstructureNotifyMask   SubstructureRedirectMask FocusChangeMask          
    PropertyChangeMask       ColormapChangeMask       
  number of visuals:    64
  default visual id:  0x21
  visual:
    visual id:    0x21
    class:    TrueColor
    depth:    24 planes
    available colormap entries:    256 per subfield
    red, green, blue masks:    0xff0000, 0xff00, 0xff
    significant bits in color specification:    8 bits
 .
.
. etc etc 

However RHEL 6.3 workstation claims that accelerated 3D graphics is not available. I get this 
by clicking on the System -> Preferences -> Desktop Effects.  Not sure what the issue is but I am guessing it must be either the hardware ( NVidia Quadro FX 3500 ) or the driver in play.  even stranger, there are two physical screens but only one in xdpyinfo. That seems wrong or perhaps some XINERAMA magic.

Either way ... building a whole new X is a tad extreme but the extreme usually works. 

Any thoughts you have would be greatly appreciated. 

Dennis