V Sync for FireGL 2 graphics cards

I was wondering if anyone knows how to turn on the Vertical Sync settings for FireGL 2 graphics cards.
I am using XFree86 4.1.0 and the matching drivers for the card.

Any help on this item would be appreciated.

Try " man XF86Config "

I don’t think you fully understood what I meant. I am not looking to set the refresh rates, I am looking to tell the graphics card to sync its vertical blanking to the refresh rate the card is running at.

I know with Geforce based cards that you can say:
setenv __GL_SYNC_TO_VBLANK 1
Then if you are using double buffering in the opengl calls the frames are updated every clock refresh - it actually swaps the two buffers. This should stop tearing.

Unfortunately I couldn’t see anything on the card makers website (www.ati.com) about this and hoped that someone else had managed to work it out already.

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