Print Page - Unable to find valid display mode

Title: Unable to find valid display mode
Post by: gdboling 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.

Thanks.

Gregg

Title: Now a sound issue.
Post by: gdboling 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.

Title: Unable to find valid display mode
Post by: DustWorm2 on June 29, 2005, 03:32:07

Hey
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.

Regards

LWJGL Forum

Programming => OpenGL => Topic started by: gdboling on June 28, 2005, 21:05:25