I wish the bugs in my RW game were butterflies.

I'm reasonably sure my problem is a variation on the theme of the OpenGL bug I've seen reported here, but...

I'm playing the game through Steam on Ubuntu (16.04, upgraded to latest) using an Nvidia video card.

Like the Windows user in another thread (which has been marked 'done,') the game crashes randomly after so much playtime.

Unlike him, it's not just the game. I have to hard-reset my computer.

I've tried updating all drivers, etc. The issue persists.

There was a recentish login-loop issue involving Ubuntu and nvidia; I had to apply the fix for this.

Needless to say, this situation discourages me from playing.

Not long playtime. Like this other thread, it's random:

Game crashes due to problem with NVIDIA OpenGL driver - Client Help - Rising World Forum

/////////////////////////////////////////////////////////////////////////////////
Report of 03/27/2016 06:39 AM by perhonen Version: 0.6.5.1_26 (Steamversion)
OS: Linux Version: 3.13.0-76-generic Java version: 1.8.0_73 JVM architecture: amd64
CPU cores: 4
JVM Memory used: 101.42 MB reserved: 125.70 MB max: 2112.62 MB

/////////////////////////////////////////////////////////////////////////////////
Existing buffers: 10632
(b: 5345 f: 3708 i: 19 s: 1560 d: 0)
Total heap memory held: 99045kb
Total direct memory held: 241856kb
(b: 218589kb f: 20585kb i: 1kb s: 2680kb d: 0kb)

/////////////////////////////////////////////////////////////////////////////////
Settings:
Resolution: 1280x1024 (Fullscreen)
Frequency: 51 Vsync: off
DepthBits: 24
BitsPerPixel: 24
Samples: 1
MaxFrames: 200
Renderer: LWJGL-OpenGL2

Anisotropic: 1
DynamicLights: 100 Quality: 2
ViewDistance: 9 (LOD: 25)

LS(Q)/LG/ENV/PHD/NM/FOD/FXAA/SPEC/REFR/SSAO/INST: 1(70)/1/1/1/1/1/0/1/1/1/1

/////////////////////////////////////////////////////////////////////////////////
Graphics: GeForce GT 630/PCIe/SSE2 Vendor: NVIDIA Corporation OpenGL version: 4.2.0 NVIDIA 304.131
Accelerated Memory: Indeterminate
GLMaxTextureSize: 16384
GLMaxTextureImageUnits: 32
GLMaxArrayTextureLayers: 35071
GLMaxVertexTextureImageUnits: 32
GLMaxVertexUniforms: 4096
GLMaxFragmentUniforms: 2048
GLMaxVaryingFloats: 124
GLMaxVertexAttribs: 16

Capabilities: [FrameBuffer, FrameBufferMRT, FrameBufferMultisample, TextureMultisample, OpenGL20, OpenGL21, OpenGL30, OpenGL31, OpenGL32, OpenGL33, OpenGL40, GLSL100, GLSL110, GLSL120, GLSL130, GLSL140, GLSL150, GLSL330, GLSL400, VertexTextureFetch, GeometryShader, TesselationShader, TextureArray, TextureBuffer, FloatTexture, FloatColorBuffer, FloatDepthBuffer, PackedFloatTexture, SharedExponentTexture, PackedFloatColorBuffer, NonPowerOfTwoTextures, MeshInstancing, VertexBufferArray, Multisample, PackedDepthStencilBuffer, Srgb, FrameBufferBlit, TextureCompressionS3TC, TextureFilterAnisotropic, Rgba8, DepthTexture, IntegerIndexBuffer, SeamlessCubemap, BinaryShader]

/////////////////////////////////////////////////////////////////////////////////
Sounddrivers:
(0) default, STEREO, 2, 48000
(1) pulse, STEREO, 2, 48000
(2) sysdefault:CARD=PCH, STEREO, 2, 48000
(3) front:CARD=PCH,DEV=0, STEREO, 2, 48000
(4) surround40:CARD=PCH,DEV=0, STEREO, 2, 48000
(5) surround41:CARD=PCH,DEV=0, STEREO, 2, 48000
(6) surround50:CARD=PCH,DEV=0, STEREO, 2, 48000
(7) surround51:CARD=PCH,DEV=0, STEREO, 2, 48000
(8) surround71:CARD=PCH,DEV=0, STEREO, 2, 48000
(9) iec958:CARD=PCH,DEV=0, STEREO, 2, 48000
(10) dmix:CARD=PCH,DEV=0, STEREO, 2, 48000
(11) dmix:CARD=PCH,DEV=1, STEREO, 2, 48000
(12) dsnoop:CARD=PCH,DEV=0, STEREO, 2, 48000
(13) dsnoop:CARD=PCH,DEV=1, STEREO, 2, 48000
(14) hw:CARD=PCH,DEV=0, STEREO, 2, 48000
(15) hw:CARD=PCH,DEV=1, STEREO, 2, 48000
(16) plughw:CARD=PCH,DEV=0, STEREO, 2, 48000
(17) plughw:CARD=PCH,DEV=1, STEREO, 2, 48000
(18) hdmi:CARD=NVidia,DEV=0, STEREO, 2, 48000
(19) hdmi:CARD=NVidia,DEV=1, STEREO, 2, 48000
(20) hdmi:CARD=NVidia,DEV=2, STEREO, 2, 48000
(21) hdmi:CARD=NVidia,DEV=3, STEREO, 2, 48000
(22) dmix:CARD=NVidia,DEV=3, STEREO, 2, 48000
(23) dmix:CARD=NVidia,DEV=7, STEREO, 2, 48000
(24) dmix:CARD=NVidia,DEV=8, STEREO, 2, 48000
(25) dmix:CARD=NVidia,DEV=9, STEREO, 2, 48000
(26) dsnoop:CARD=NVidia,DEV=3, STEREO, 2, 48000
(27) dsnoop:CARD=NVidia,DEV=7, STEREO, 2, 48000
(28) dsnoop:CARD=NVidia,DEV=8, STEREO, 2, 48000
(29) dsnoop:CARD=NVidia,DEV=9, STEREO, 2, 48000
(30) hw:CARD=NVidia,DEV=3, STEREO, 2, 48000
(31) hw:CARD=NVidia,DEV=7, STEREO, 2, 48000

/////////////////////////////////////////////////////////////////////////////////
Camera location: (0.0, 0.0, 0.0) Camera rotation: (0.0, 0.0, 0.0, 1.0)
Total running time: 221.87427

/////////////////////////////////////////////////////////////////////////////////
home/tautaula/.local/share/Steam/SteamApps/common/RisingWorld/risingworld.jar (null)
home/tautaula/.local/share/Steam/SteamApps/common/RisingWorld/core/jbullet.jar (null)
home/tautaula/.local/share/Steam/SteamApps/common/RisingWorld/core/jinput.jar (null)
home/tautaula/.local/share/Steam/SteamApps/common/RisingWorld/core/jinput-natives-linux.jar (null)
home/tautaula/.local/share/Steam/SteamApps/common/RisingWorld/core/jinput-natives-osx.jar (null)
home/tautaula/.local/share/Steam/SteamApps/common/RisingWorld/core/jinput-natives-windows.jar (null)
home/tautaula/.local/share/Steam/SteamApps/common/RisingWorld/core/jme3-core.jar (null)
home/tautaula/.local/share/Steam/SteamApps/common/RisingWorld/core/jme3-desktop.jar (null)
home/tautaula/.local/share/Steam/SteamApps/common/RisingWorld/core/jme3-effects.jar (null)
home/tautaula/.local/share/Steam/SteamApps/common/RisingWorld/core/jme3-jbullet.jar (null)
home/tautaula/.local/share/Steam/SteamApps/common/RisingWorld/core/jme3-lwjgl.jar (null)
home/tautaula/.local/share/Steam/SteamApps/common/RisingWorld/core/jutils.jar (null)
home/tautaula/.local/share/Steam/SteamApps/common/RisingWorld/core/lwjgl.jar (null)
home/tautaula/.local/share/Steam/SteamApps/common/RisingWorld/core/lwjgl-natives-linux.jar (null)
home/tautaula/.local/share/Steam/SteamApps/common/RisingWorld/core/lwjgl-natives-osx.jar (null)
home/tautaula/.local/share/Steam/SteamApps/common/RisingWorld/core/lwjgl-natives-windows.jar (null)
home/tautaula/.local/share/Steam/SteamApps/common/RisingWorld/core/stack-alloc.jar (null)
home/tautaula/.local/share/Steam/SteamApps/common/RisingWorld/core/vecmath.jar (null)
home/tautaula/.local/share/Steam/SteamApps/common/RisingWorld/data/server.jar (null)
home/tautaula/.local/share/Steam/SteamApps/common/RisingWorld/data/commons.jar (null)
home/tautaula/.local/share/Steam/SteamApps/common/RisingWorld/data/jiw/java-fmod.jar (null)
home/tautaula/.local/share/Steam/SteamApps/common/RisingWorld/data/jiw/java-fmod-natives.jar (null)
home/tautaula/.local/share/Steam/SteamApps/common/RisingWorld/data/jiw/jiw-gui.jar (null)
home/tautaula/.local/share/Steam/SteamApps/common/RisingWorld/data/jiw/jiw-network.jar (null)
home/tautaula/.local/share/Steam/SteamApps/common/RisingWorld/data/jiw/vertx-client.jar (null)
home/tautaula/.local/share/Steam/SteamApps/common/RisingWorld/data/jiw/rcon.jar (null)
home/tautaula/.local/share/Steam/SteamApps/common/RisingWorld/lib/snakeyaml.jar (null)
home/tautaula/.local/share/Steam/SteamApps/common/RisingWorld/lib/sqlite-jdbc.jar (null)
home/tautaula/.local/share/Steam/SteamApps/common/RisingWorld/lib/netty.jar (null)
home/tautaula/.local/share/Steam/SteamApps/common/RisingWorld/lib/javax-json.jar (null)
home/tautaula/.local/share/Steam/SteamApps/common/RisingWorld/lib/luaj.jar (null)
home/tautaula/.local/share/Steam/SteamApps/common/RisingWorld/data/assets/interface.jar (null)
home/tautaula/.local/share/Steam/SteamApps/common/RisingWorld/data/assets/materials.jar (null)
home/tautaula/.local/share/Steam/SteamApps/common/RisingWorld/data/assets/models.jar (null)
home/tautaula/.local/share/Steam/SteamApps/common/RisingWorld/data/assets/textures.jar (null)


/////////////////////////////////////////////////////////////////////////////////
Error details:
Uncaught exception thrown in Thread[jME3 Main,5,main]
java.lang.RuntimeException: Unable to find fullscreen display mode matching settings
at com.jme3.system.lwjgl.LwjglDisplay.createContext(LwjglDisplay.java:79)
at com.jme3.system.lwjgl.LwjglDisplay.runLoop(LwjglDisplay.java:179)
at com.jme3.system.lwjgl.LwjglAbstractDisplay.run(LwjglAbstractDisplay.java:233)
at java.lang.Thread.run(Thread.java:745)

Unlike that other thread, when my game fails, it takes the whole computer with it. My screen is black til I hard-reset. This has happened to me a few times since the date included as part of that last post, yet there are no logs because of what I had to do to get my computer back.

All I can tell you is, the sound keeps playing while the screen is black. The issue isn't monitor/videocard only, because I try things like alt-f4, and nothing has any effect I can perceive.

That error log is from last year! There's no way it's a log of this problem. But it's the errorlog I have, and might help since it includes my specs.

Thanks! I've done some of that already, but the rest sure won't hurt!