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jorio / Bugdom

🐛 Pangea Software's Bugdom for modern systems
https://pangeasoft.net/bug
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segfault on Ubuntu 20.04 #4

Closed kc9jud closed 3 years ago

kc9jud commented 3 years ago

I'm getting an almost immediate segfault when trying to start Bugdom on Ubuntu MATE 20.04. Here's a stack trace from a debug build:

$ gdb build-debug/Bugdom 
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Reading symbols from build-debug/Bugdom...
(gdb) run
Starting program: $HOME/Projects/Bugdom/build-debug/Bugdom 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffef680700 (LWP 678556)]
[New Thread 0x7fffeee7f700 (LWP 678557)]
[New Thread 0x7fffee67e700 (LWP 678558)]
[New Thread 0x7fffede7d700 (LWP 678559)]
[New Thread 0x7fffed478700 (LWP 678560)]
[New Thread 0x7fffed437700 (LWP 678561)]

Thread 1 "Bugdom" received signal SIGSEGV, Segmentation fault.
0x00007ffff55b5c34 in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
(gdb) bt
#0  0x00007ffff55b5c34 in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#1  0x00007ffff577d38e in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#2  0x00007ffff5590789 in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#3  0x00007ffff5591363 in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007ffff4accc79 in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00005555556b08a5 in GLDrawContext_New (theView=0x555555f40a80, theDrawContext=0x555555f40d10, clearFlags=0x555555f3f368) at $HOME/Projects/Bugdom/extern/Quesa/Development/Source/Renderers/Common/GLDrawContext.cpp:2195
#6  0x00005555556da693 in QORenderer::Renderer::StartFrame (this=0x555555f3ef00, inView=0x555555f40a80, inDrawContext=0x555555f40d10) at $HOME/Projects/Bugdom/extern/Quesa/Development/Source/Renderers/OpenGL/QOStartAndEnd.cpp:236
#7  0x00005555556471bd in QORenderer::Statics::StartFrameMethod (inView=0x555555f40a80, privateData=0x555555a788e8, inDrawContext=0x555555f40d10) at $HOME/Projects/Bugdom/extern/Quesa/Development/Source/Renderers/OpenGL/QOStatics.cpp:136
#8  0x0000555555625345 in E3Renderer_Method_StartFrame (theView=0x555555f40a80, theDrawContext=0x555555f40d10) at $HOME/Projects/Bugdom/extern/Quesa/Development/Source/Core/System/E3Renderer.cpp:402
#9  0x00005555556372a5 in E3View_StartRendering (theView=0x555555f40a80) at $HOME/Projects/Bugdom/extern/Quesa/Development/Source/Core/System/E3View.cpp:3971
#10 0x00005555555f12ed in Q3View_StartRendering (view=0x555555f40a80) at $HOME/Projects/Bugdom/extern/Quesa/Development/Source/Core/Glue/QD3DView.cpp:289
#11 0x00005555555a94d1 in QD3D_DrawScene (setupInfo=0x55555603a4a0, drawRoutine=0x5555555c8c1f <DrawObjects>) at $HOME/Projects/Bugdom/src/QD3D/QD3D_Support.c:628
#12 0x00005555555b8a8a in DoPangeaLogo () at $HOME/Projects/Bugdom/src/Screens/MiscScreens.c:373
#13 0x00005555555c78dc in GameMain () at $HOME/Projects/Bugdom/src/System/Main.c:900
#14 0x0000555555564c18 in CommonMain (argc=1, argv=0x7fffffffc368) at $HOME/Projects/Bugdom/src/Main.cpp:140
#15 0x0000555555564d99 in main (argc=1, argv=0x7fffffffc368) at $HOME/Projects/Bugdom/src/Main.cpp:162
(gdb)

This looks like it could be an OpenGL/driver problem, but I'm not sure. It's possibly related to this bug.

kc9jud commented 3 years ago

I can confirm it's an upstream bug with OpenGL. Maybe this should have a note in the readme or build notes?

jpenguin commented 3 years ago

My VM runs Ubuntu Mate 20.04, run Bugdom fine with no 3D acceleration. https://filedn.com/lHGef0SOQKnBTotcJeEfshJ/Games/Bugdom/Bugdom_linux64_1.3.0r1.tar.xz static build done on Tumbleweed that seems to run fine on Ubuntu

kc9jud commented 3 years ago

Yeah, this is absolutely an upstream driver bug in Ubuntu -- the same bug causes Steam to crash, and the same workaround applies to both. It makes sense that it wouldn't show up in a virtualized environment.

jorio commented 3 years ago

Sorry, I can't do much about a GPU driver bug that affects most OpenGL applications (not Bugdom specifically).