dameon@localhost ~ $ beryl-manager
dameon@localhost ~ $ Xlib:  extension "GLX" missing on display ":0.0".
Xlib:  extension "GLX" missing on display ":0.0".
Xlib:  extension "GLX" missing on display ":0.0".
Error: couldn't find RGB GLX visual
Xlib:  extension "GLX" missing on display ":0.0".
Xlib:  extension "GLX" missing on display ":0.0".
Xlib:  extension "GLX" missing on display ":0.0".
Xlib:  extension "GLX" missing on display ":0.0".
Xlib:  extension "GLX" missing on display ":0.0".
Xlib:  extension "GLX" missing on display ":0.0".
**************************************************************
* Beryl system compatiblity check                            *
**************************************************************

Detected xserver                                : AIGLX

Checking Display :0 ...

Checking for XComposite extension               : passed (v0.3)
Checking for XDamage extension                  : passed
Checking for RandR extension                    : passed
Checking for XSync extension                    : passed

Checking Screen 0 ...

Xlib:  extension "GLX" missing on display ":0.0".
Root visual is not a GL visual
Xlib:  extension "GLX" missing on display ":0.0".
beryl: Root visual is not a GL visual
beryl: Failed to manage screen: 0
beryl: No manageable screens found on display :0
kwin: Fatal IO error: client killed
**************************************************************
* Beryl system compatiblity check                            *
**************************************************************

Detected xserver                                : AIGLX

Checking Display :0 ...

Checking for XComposite extension               : passed (v0.3)
Checking for XDamage extension                  : passed
Checking for RandR extension                    : passed
Checking for XSync extension                    : passed

Checking Screen 0 ...

Xlib:  extension "GLX" missing on display ":0.0".
Root visual is not a GL visual
Xlib:  extension "GLX" missing on display ":0.0".
beryl: Root visual is not a GL visual
beryl: Failed to manage screen: 0
beryl: No manageable screens found on display :0