X Display Errors

[phoch00]

I've noticed that I get display error messages like:

Xlib: connection to ":0.0" refused by server
Xlib: No protocol specified

dpkg-preconfigure: cannot connect to X server :0.0
debconf: unable to initialize frontend: Kde
debconf: (DISPLAY problem?)
debconf: falling back to frontend: Dialog

This was during an Adept Update. I also get similar messages when starting some programs from the command line. Other than the occasional error message I don't have any other symptoms or concerns. Any thoughts on this? I would guess it started after using Automatix to install the nVidia drivers.

Here's a message from the command line when starting a gui program:

X Error: BadDevice, invalid or uninitialized input device 166
  Major opcode:  146
  Minor opcode:  3
  Resource id:  0x0
Failed to open device
X Error: BadDevice, invalid or uninitialized input device 166
  Major opcode:  146
  Minor opcode:  3
  Resource id:  0x0
Failed to open device

[phoch00]

A little digging around with Google and I found the solution.

Apparently the default xorg.conf includes support for Wacom tablets which I'm not using and commenting out those lines in the xorg.conf resolved the situation. If anyone else has the issue, edit your xorg.conf as follows:

First, make a backup of it in case you screw up! If you don't do that your X session might not start and then you'll be at the command line to fix it. So, first:

sudo cp /etc/X11/xorg.conf /etc/X11/xorg.conf.bak

This way if X doesn't start you can just get your old conf file back in place by typing:

sudo mv /etc/X11/xorg.conf.bak /etc/X11/xorg.conf

Now that there is a backup, edit the following:

Section "ServerLayout"
    Identifier     "Default Layout"
    Screen         "Default Screen" 0 0
    InputDevice    "Generic Keyboard"
    InputDevice    "Configured Mouse"
#    InputDevice    "stylus" "SendCoreEvents"
#    InputDevice    "cursor" "SendCoreEvents"
#    InputDevice    "eraser" "SendCoreEvents"
EndSection

This comments out the stylus, cursor, and eraser in the ServerLayout section.

Next, comment out the following sections as follows:

# Section "InputDevice"
#
#                                                      # /dev/input/event
#                                                      # for USB
#    Identifier     "stylus"
#    Driver         "wacom"
#    Option         "Device" "/dev/wacom"          # Change to 
#    Option         "Type" "stylus"
#    Option         "ForceDevice" "ISDV4"               # Tablet PC ONLY
# EndSection

# Section "InputDevice"
#
#                                                      # /dev/input/event
#                                                      # for USB
#    Identifier     "eraser"
#    Driver         "wacom"
#    Option         "Device" "/dev/wacom"          # Change to 
#    Option         "Type" "eraser"
#    Option         "ForceDevice" "ISDV4"               # Tablet PC ONLY
# EndSection

# Section "InputDevice"
#
#                                                      # /dev/input/event
#                                                      # for USB
#    Identifier     "cursor"
#    Driver         "wacom"
#    Option         "Device" "/dev/wacom"          # Change to 
#    Option         "Type" "cursor"
#    Option         "ForceDevice" "ISDV4"               # Tablet PC ONLY
# EndSection

That does the trick for me! Restart X and you are good.