"Please Note: If you are unable to use any 3d applications and get this
error instead:


FGLTexMgr: open of shared memory object failed (Function not implemented)
__FGLTexMgrCreateObject: __FGLTexMgrSHMmalloc failed!!!
fglX11AllocateManagedSurface: __FGLTexMgrCreateObject failed!!
FGLTexMgr: open of shared memory object failed (Function not implemented)
__FGLTexMgrCreateObject: __FGLTexMgrSHMmalloc failed!!!
fglX11AllocateManagedSurface: __FGLTexMgrCreateObject failed!!
FGLTexMgr: open of shared memory object failed (Function not implemented)
__FGLTexMgrCreateObject: __FGLTexMgrSHMmalloc failed!!!


Then you do not have tmpfs mounted on /dev/shm, which the driver requires. To 
mount this, add to following line to /etc/fstab (if it isn't there already):


tmpfs     /dev/shm           tmpfs        defaults            0 0


Then just do a:

mount /dev/shm

If the drivers still crap out on you, or for example you get a black
screen on X init, try going into your system BIOS and change graphics-
related stuff around. Believe it or not, for me my 9800 gives a black
screen on X init if I have the AGP Aperture set at anything other than
128MB. I don't know what causes this, and I don't care; I'm just
relating to you how I overcame my problem ;)

Also, when updating/recompiling your kernel, you may have to unmerge the
ati-drivers and then emerge them again.


"


>From this page: http://wiki.linuxquestions.org/wiki/Installing_ATI_drivers

-- 
cant run fgl_glxgears
https://launchpad.net/bugs/22373

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