Checking for Xgl: not present. 
xset q doesn't reveal the location of the log file. Using fallback /var/log/Xorg.0.log 
Detected PCI ID for VGA: 01:05.0 0300: 1002:9614 (prog-if 00 [VGA controller])
Checking for software rasterizer: not present. 
Checking for texture_from_pixmap: present. 
Checking for non power of two support: present. 
Checking for Composite extension: present. 
EE r600_pipe.c/r600_get_param:305 - r600: unknown param 31
Comparing resolution (1680x1050) to maximum 3D texture size (4096): Passed.
Checking for nVidia: not present. 
Checking for FBConfig: EE r600_pipe.c/r600_get_param:305 - r600: unknown param 31
present. 
Checking for Xgl: not present. 
Starting gtk-window-decorator
/usr/bin/compiz (core) - Warn: Unknown option '--ignore-desktop-hints'

/usr/bin/compiz (core) - Error: Couldn't load plugin '2'
/usr/bin/compiz (core) - Warn: Plugin 'core' already active
/usr/bin/compiz (core) - Error: Plugin 'core' not loaded.

/usr/bin/compiz (core) - Error: InitPlugin 'composite' failed
/usr/bin/compiz (core) - Error: Couldn't activate plugin 'composite'
/usr/bin/compiz (core) - Error: Plugin 'core' not loaded.

/usr/bin/compiz (core) - Error: InitPlugin 'opengl' failed
/usr/bin/compiz (core) - Error: Couldn't activate plugin 'opengl'
/usr/bin/compiz (core) - Error: Plugin 'core' not loaded.

/usr/bin/compiz (core) - Error: InitPlugin 'decor' failed
/usr/bin/compiz (core) - Error: Couldn't activate plugin 'decor'
/usr/bin/compiz (core) - Error: Plugin 'core' not loaded.

/usr/bin/compiz (core) - Error: InitPlugin 'move' failed
/usr/bin/compiz (core) - Error: Couldn't activate plugin 'move'
/usr/bin/compiz (core) - Error: Plugin 'core' not loaded.

/usr/bin/compiz (core) - Error: InitPlugin 'resize' failed
/usr/bin/compiz (core) - Error: Couldn't activate plugin 'resize'
/usr/bin/compiz (core) - Error: Plugin 'core' not loaded.

/usr/bin/compiz (core) - Error: InitPlugin 'ccp' failed
/usr/bin/compiz (core) - Error: Couldn't activate plugin 'ccp'
/usr/bin/compiz (core) - Error: Plugin 'core' not loaded.

/usr/bin/compiz (core) - Error: InitPlugin 'gnomecompat' failed
/usr/bin/compiz (core) - Error: Couldn't activate plugin 'gnomecompat'
/usr/bin/compiz-manager: line 439: 18870 Segmentation fault      ${COMPIZ_BIN_PATH}${COMPIZ_NAME} $COMPIZ_OPTIONS "$@" $COMPIZ_PLUGINS