alex@alex-linux:~$ su root
Password:
root@alex-linux:/home/alex# beryl-manager
root@alex-linux:/home/alex# **************************************************************
* Beryl system compatiblity check *
**************************************************************
Detected xserver : AIGLX
Checking Display :0.0 ...
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 ...
Checking for GLX_SGIX_fbconfig : passed
Checking for GLX_EXT_texture_from_pixmap : passed
Checking for non power of two texture support : failed
Support for non power of two textures missing
beryl: SmcOpenConnection failed: Authentication Rejected, reason : None of the authentication protocols specified are supported and host-based authentication failed
beryl: glXBindTexImageEXT is missing
beryl: Failed to manage screen: 0
beryl: No manageable screens found on display :0.0