Verifying

It is assumed that you have completed the installation process.

Verify with ATI tools

If the installation has worked, then any 3D application should work without issue. A simple way to verify without any possibility of failure is to verify the following occurs. Please note that you may have needed to go through distribution specific process to enable the 3D support.

fglrxinfo

$ fglrxinfo
display: :0.0  screen: 0
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: Radeon X1600 Series
OpenGL version string: 2.1.7415 Release

If the vendor string is "Mesa", the driver wouldn't configure properly the /etc/X11/xorg.conf .Please see the Troubleshooting page.

fgl_glxgears

You can also run the ATI provided application called fgl_glxgears which should show a spinning cube with the venerable glxgears running on each face.

If you run fgl_glxgears and the cube spins but is lacking any cogs on the faces, the faces being instead various shades of blue and/or you get an error message like:

Using GLX_SGIX_pbuffer
913 frames in 5.0 seconds = 182.600 FPS
783 frames in 5.0 seconds = 156.600 FPS
X Error of failed request:  BadDrawable (invalid Pixmap or Window parameter)
  Major opcode of failed request:  14 (X_GetGeometry)
  Resource id in failed request:  0x0
  Serial number of failed request:  51
  Current serial number in output stream:  51

Then your installation most presumably failed!

Links

http://linux.coconia.net/general/ati.htm
http://m.domaindlx.com/LinuxHelp/ati/ati.htm (mirror)

Verify with Linux tools

glxinfo

This command line option should report "direct" rendering.

$ glxinfo | grep direct

(For Debian 4.0, install the mesa-utils package to get glxinfo.)

That's 2 celver by half and 2x2 clever 4 me. Thanks!