Merci pour les réponses...
# getsebool allow_execstack
allow_execstack --> on
# glxinfo | grep rendering && glxinfo | grep NVIDIA
Xlib: extension "NV-GLX" missing on display ":0.0".
direct rendering: No (If you want to find out why, try setting LIBGL_DEBUG=verbose)
Xlib: extension "NV-GLX" missing on display ":0.0".
client glx vendor string: NVIDIA Corporation
# glxgears
Xlib: extension "NV-GLX" missing on display ":0.0".
1202 frames in 5.4 seconds = 222.252 FPS
XIO: fatal IO error 104 (Connection reset by peer) on X server ":0.0"
after 2482 requests (1733 known processed) with 0 events remaining.
more /etc/X11/xorg.conf
# Xorg configuration created by livna-config-display
Section "Files"
ModulePath "/usr/lib/xorg/modules"
EndSection
Section "ServerFlags"
Option "AIGLX" "on"
EndSection
Section "Device"
Identifier "Videocard0"
Driver "vesa"
EndSection
Section "Extensions"
Option "Composite" "Enable"
EndSection
Par contre tout fonctionne bien avec le kernel 2.6.35.6-48.fc14.i686