Can start the app: java.lang.ArrayIndexOutOfBoundsException: 0

[BrunoSalerno]

I'm getting this in Ubuntu:

$ java -jar METRO_0.1.3_alpha.jar 
Exception in thread "LWJGL Application" java.lang.ExceptionInInitializerError
    at com.badlogic.gdx.backends.lwjgl.LwjglGraphics.setVSync(LwjglGraphics.java:446)
    at com.badlogic.gdx.backends.lwjgl.LwjglApplication$1.run(LwjglApplication.java:118)
Caused by: java.lang.ArrayIndexOutOfBoundsException: 0
    at org.lwjgl.opengl.XRandR.findPrimary(XRandR.java:326)
    at org.lwjgl.opengl.XRandR.ScreentoDisplayMode(XRandR.java:315)
    at org.lwjgl.opengl.LinuxDisplay$3.run(LinuxDisplay.java:746)
    at org.lwjgl.opengl.LinuxDisplay$3.run(LinuxDisplay.java:743)
    at java.security.AccessController.doPrivileged(Native Method)
    at org.lwjgl.opengl.LinuxDisplay.init(LinuxDisplay.java:743)
    at org.lwjgl.opengl.Display.<clinit>(Display.java:138)
    ... 2 more
AL lib: (EE) alc_cleanup: 1 device not closed

[hauke96]

Hi thanks for the report.
What hardware do you use (especially graphics card, the resolution of your screen, the amount of screens, etc.)?
Try to turn of the vsync, so set use.vsync=true in the settings.cfg file to use.vsync=false, because the problem startes in the com.badlogic.gdx.backends.lwjgl.LwjglGraphics.setVSync(LwjglGraphics.java:446).
Are you using xrandr for your screen config stuff?

[BrunoSalerno]

I set use.vsync=false in the config file but I still get the same error.
I think I'm using xrandr, yes. My OS is Ubuntu 14.4 (32 bits). My video card is an Intel Haswell integrated GPU.

[hauke96]

How many monitors are you using and what resolution does it/do they have?

[BrunoSalerno]

Just one, 1440x900. I tried modifying the resolution in settings.cfg to 800x600 but I still got the error.

[hauke96]

Hm, that's kinda interesting ...
I don't know if this helps, but maybe xrandr has no primary monitor.
If the output of xrandr --current does not show any primary monitor (something like DVI-D-0 connected primary 1920x1080+0+0 ...) then try to set it with xrandr --output (for me the device is DVI-D-0so the command is xrandr --output DVI-D-0 --primary).
When there is an primary monitor set, check if it's the right one and possibly change it.

[hauke96]

Closed due to inactivity and not a METRO but a LibGDX issue.