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Unable to find valid display mode

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Unable to find valid display mode
« on: June 28, 2005, 21:05:25 »
I am running LWJGL on a linux machine.  I am getting an error in a dialog when I try and run a simple program that displays a cube (stuff like the NEHE tutorials).

Unable To Find Valid Display Mode

I do currently have opengl 3d acceleration support on the linux box and other native opengl code (glxgears, etc) work just fine, so I know opengl is working.  I am going to try and specify a display mode statically and see what it does but in the meantime does anyone know why I would be getting this error message?  I have downloaded the latest JAR and native libs.  If you need any other information just let me know.



Now a sound issue.
« Reply #1 on: June 28, 2005, 21:19:30 »
Ok, found the problem?  For some reason the only display mode available is my max resolution which I have set to 1920x1200.  Not sure if this is an issue with xorg or what.  I'll look at my config and make sure there are more resolutions available.  But I am running in Windowed mode so I don't know why this would be a problem.

Now for another problem.  Sound won't initialize so LWJGL just fails.  Here is the stack trace:

Code: [Select]

org.lwjgl.LWJGLException: Could not open ALC device
at org.lwjgl.openal.AL.create(AL.java:150)
at lsg.render.SoundStore.init(SoundStore.java:107)
at lsg.render.SoundStore.<init>(SoundStore.java:53)
at lsg.Game.init(Game.java:251)
at lsg.Game.start(Game.java:90)
at lsg.LSG.main(LSG.java:41)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:78)

For now I am not loading my SoundStore class so I can get past this.  But it does work fine in windows and mac. Not sure why not in linux.

Unable to find valid display mode
« Reply #2 on: June 29, 2005, 03:32:07 »
I had a similar problem but with bits per pixel.
Under windows BPP is 16/32 etc. but somehow under Linux I get only 24.

I do not know if that helps, but might help others, since I spet a bit of time on figureing out that BPP.

Also, you might want to try to upgrade your Graphic Card drivers. That usually help to solve any problem that invloves GC.

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