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soupcan

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From: ?

Registered: 2008-10-25

Posts: 268

Minecraft/Java error - Cannot connect to X server

Hi all, I've been getting a bunch of X-related problems after a recent update. I'm getting this error whenever I attempt to run minecraft:

No protocol specified
Exception in thread "main" java.lang.InternalError: Can't connect to X11 window server using ':0' as the value of the DISPLAY variable.
    at sun.awt.X11GraphicsEnvironment.initDisplay(Native Method)
    at sun.awt.X11GraphicsEnvironment.access$100(X11GraphicsEnvironment.java:52)
    at sun.awt.X11GraphicsEnvironment$1.run(X11GraphicsEnvironment.java:155)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.awt.X11GraphicsEnvironment.<clinit>(X11GraphicsEnvironment.java:131)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:169)
    at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:68)
    at sun.awt.X11.XToolkit.<clinit>(XToolkit.java:89)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:169)
    at java.awt.Toolkit$2.run(Toolkit.java:834)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.awt.Toolkit.getDefaultToolkit(Toolkit.java:826)
    at java.awt.KeyboardFocusManager.initPeer(KeyboardFocusManager.java:399)
    at java.awt.KeyboardFocusManager.<init>(KeyboardFocusManager.java:395)
    at java.awt.DefaultKeyboardFocusManager.<init>(DefaultKeyboardFocusManager.java:47)
    at java.awt.KeyboardFocusManager.getCurrentKeyboardFocusManager(KeyboardFocusManager.java:165)
    at java.awt.KeyboardFocusManager.getCurrentKeyboardFocusManager(KeyboardFocusManager.java:156)
    at javax.swing.plaf.synth.SynthLookAndFeel.initialize(SynthLookAndFeel.java:632)
    at com.sun.java.swing.plaf.gtk.GTKLookAndFeel.initialize(GTKLookAndFeel.java:1392)
    at javax.swing.UIManager.setLookAndFeel(UIManager.java:513)
    at javax.swing.UIManager.setLookAndFeel(UIManager.java:558)
    at net.minecraft.LauncherFrame.main(LauncherFrame.java:154)
    at net.minecraft.MinecraftLauncher.main(MinecraftLauncher.java:13)

Here is my xorg.conf, generated with nvidia-xconfig:

# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig:  version 275.09.07  (buildmeister@swio-display-x86-rhel47-03.nvidia.com)  Wed Jun  8 14:38:32 PDT 2011


Section "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "Screen0" 0 0
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Mouse0" "CorePointer"
EndSection

Section "Files"
EndSection

Section "InputDevice"

    # generated from default
    Identifier     "Mouse0"
    Driver         "mouse"
    Option         "Protocol" "auto"
    Option         "Device" "/dev/psaux"
    Option         "Emulate3Buttons" "no"
    Option         "ZAxisMapping" "4 5"
EndSection

Section "InputDevice"

    # generated from default
    Identifier     "Keyboard0"
    Driver         "kbd"
EndSection

Section "Monitor"
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "Unknown"
    HorizSync       28.0 - 33.0
    VertRefresh     43.0 - 72.0
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

I think there might be a possibility a fix with the Protocol "auto" line, but I don't know much about X.
EDIT: this problem only happens when gdm is started in inittab, not when gdm is started as a daemon. unfortunately, starting gdm that way is much slower.

Last edited by soupcan (2011-06-20 05:16:21)