wallace@L-LIN-WAL:~$ beryl-manager
wallace@L-LIN-WAL:~$ libGL warning: 3D driver claims to not support visual 0x4b
X Error: BadDevice, invalid or uninitialized input device 168
  Major opcode:  145
  Minor opcode:  3
  Resource id:  0x0
Failed to open device
X Error: BadDevice, invalid or uninitialized input device 168
  Major opcode:  145
  Minor opcode:  3
  Resource id:  0x0
Failed to open device