mia@mia-desktop:~$ DISPLAY=:0 emerald --replace
X Error: BadDevice, invalid or uninitialized input device 169
  Major opcode:  147
  Minor opcode:  3
  Resource id:  0x0
Failed to open device
X Error: BadDevice, invalid or uninitialized input device 169
  Major opcode:  147
  Minor opcode:  3
  Resource id:  0x0
Failed to open device
beryl: No GLXFBConfig for depth 32
beryl: No GLXFBConfig for depth 32
beryl: No GLXFBConfig for depth 32
mia@mia-desktop:~$ X Error: BadDevice, invalid or uninitialized input device 169
  Major opcode:  147
  Minor opcode:  3
  Resource id:  0x0
Failed to open device
X Error: BadDevice, invalid or uninitialized input device 169
  Major opcode:  147
  Minor opcode:  3
  Resource id:  0x0
Failed to open device
beryl: No GLXFBConfig for depth 32
beryl: No GLXFBConfig for depth 32
beryl: No GLXFBConfig for depth 32