[Проблемы с OpenGL]

Имеется

видюха: Matrox Parhelia QID LP

соответственно и дрова под нее стоят родные.

Из XF86Config-4:

Section "Module"
#       Load    "GLcore"
        Load    "bitmap"
        Load    "dbe"
        Load    "ddc"
        Load    "dri"
        Load    "extmod"
        Load    "freetype"
        Load    "glx"
        Load    "int10"
        Load    "record"
        Load    "speedo"
        Load    "type1"
        Load    "vbe"
EndSection

............

Section "Device"
#       Identifier      "Generic Video Card"
        Identifier      "MGA CARD1"
#       Driver          "vesa"
        Driver          "mtx"
        BusID           "PCI:5:0:0"
        Option          "QID" "on"
        Screen          0
EndSection

.........

Section "Screen"
   Identifier "Screen 1"
   Device     "MGA CARD1"
   Monitor    "My Monitor 1"
   DefaultDepth   24
   DefaultFbbpp   32
#   Option      "TripleHead"

   SubSection "Display"
     Depth     24
     Virtual    3072 768
     Modes     "1024x768"
    EndSubSection
EndSection

.......................

Section "ServerLayout"
        Identifier      "Default Layout"
        Screen          "Screen 1"
        Screen          "Screen 2"# leftOf "Screen 1"
#       Screen          "Screen 3"# rightof "Screen 2"
#       Screen          "Screen 4"# rightof "Screen 3"
        InputDevice     "Generic Keyboard"
        InputDevice     "Configured Mouse"
EndSection

Section "DRI"
        Mode    0666
EndSection

#Section "ServerFlags"
#       Option "Xinerama" "true"
#EndSection

...............

все впринципе работает

за исключением GL

вот что говорит glxinfo:

$ glxinfo -display :0.0
 name of display: :0.0
 Xlib: sequence lost (0x10000 > 0xc) in reply type 0x0! 
 X Error of failed request:  0
  Major opcode of failed request:  0 ()
  Serial number of failed request:  0
  Current serial number in output stream:  12

Что интересно при включенной Xinerama при запуске glxinfo X просто падают.........

Может у кого появятся идеи как это побороть?