X Error: BadRequest (invalid request code or no such operation) 1
  Major opcode:  146
  Minor opcode:  2
  Resource id:  0x1a00001
Xlib:  extension "XInputExtension" missing on display ":2.0".
Failed to get list of devices
The program 'firefox-bin' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadRequest (invalid request code or no such operation)'.
  (Details: serial 190 error_code 1 request_code 146 minor_code 23)
  (Note to programmers: normally, X errors are reported asynchronously;
   that is, you will receive the error a while after causing it.
   To debug your program, run it with the --sync command line
   option to change this behavior. You can then get a meaningful
   backtrace from your debugger if you break on the gdk_x_error() function.)