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This error is not harmful. You can ignore it without any trouble to use eman.

But to compile EMAN on Ubuntu (>7.04), you need set ENABLE_UBUNTU in ccmake, type 't' for advanced setting.

If you think this is annoying and want to get rid of it, please do as following:

<code>
Seems a lot of users are getting the below errors when running applications from the console:
Code:
X Error: BadDevice, invalid or uninitialized input device 168
  Major opcode:  148
  Minor opcode:  3
  Resource id:  0x0
Failed to open device
X Error: BadDevice, invalid or uninitialized input device 168
  Major opcode:  148
  Minor opcode:  3
  Resource id:  0x0
Failed to open device
To fix this, look for the lines posted below, or similar to, and comment them out of your /etc/X11/xorg.conf file:
Code:
# Section "InputDevice"
#  Driver        "wacom"
#  Identifier    "stylus"
#  Option        "Device"        "/dev/wacom"          # Change to
#                                                      # /dev/input/event
#                                                      # for USB
#  Option        "Type"          "stylus"
#  Option        "ForceDevice"   "ISDV4"               # Tablet PC ONLY
#EndSection
#Section "InputDevice"
#  Driver        "wacom"
#  Identifier    "eraser"
#  Option        "Device"        "/dev/wacom"          # Change to
#                                                      # /dev/input/event
#                                                      # for USB
#  Option        "Type"          "eraser"
#  Option        "ForceDevice"   "ISDV4"               # Tablet PC ONLY
#EndSection
#Section "InputDevice"
#  Driver        "wacom"
#  Identifier    "cursor"
#  Option        "Device"        "/dev/wacom"          # Change to
#                                                      # /dev/input/event
#                                                      # for USB
#  Option        "Type"          "cursor"
#  Option        "ForceDevice"   "ISDV4"               # Tablet PC ONLY
#EndSection
Then also a bit further down in the file you need to look for the below lines, or ones similar to these:
Code:
Section "ServerLayout"
        Identifier      "Default Layout"
        Screen          "Default Screen"
        InputDevice     "Generic Keyboard"
        InputDevice     "Configured Mouse"
#       InputDevice     "stylus" "SendCoreEvents"
#       InputDevice     "cursor" "SendCoreEvents"
#       InputDevice     "eraser" "SendCoreEvents"
EndSection
**WARNING** If you fail to comment the lines below that are commented out, then X will *NOT* start when you go to restart the X server.
Once you comment those things out then a restart of X is needed.  Once X is back up and running again you shouldn't see those errors anymore.
</code>
the solution is come from [[http://kubuntuforums.net/forums/index.php?topic=7964.0;topicseen|Ubuntu forum]], I copy it here in case that [[http://kubuntuforums.net/forums/index.php?topic=7964.0;topicseen|link]] is not approachable.