Comment 0 for bug 75745

It is reproducable two way:

1./ Open KDE System Settings / Display -> (Error message: The module Display could not be loaded.)

2./ from shell:

~$ kcmshell display
X Error: BadDevice, invalid or uninitialized input device 166
  Major opcode: 144
  Minor opcode: 3
  Resource id: 0x0
Failed to open device
X Error: BadDevice, invalid or uninitialized input device 166
  Major opcode: 144
  Minor opcode: 3
  Resource id: 0x0
Failed to open device

(I Try with Nvidia and ATI videocards)