Troubleshooting Linux compat problems

dressupgeekout

In the past, I for sure was able to use NetBSD's Linux compat to run the Linux version of VA-11 Hall-A: Cyberpunk Bartender Action. And I know I'm not the only one: https://washbear.neocities.org/valhalla.html

But now when I try to run it (and several other Linux binaries of multimedia apps) I consistently segfault fairly early on -- a window is drawn to the screen, but never enough time to actually render anything interesting. And a core dump.

What can I do to debug this? It'd be cool to get a backtrace, even -- but I'm not sure how to get started with that, cuz it's a Linux binary... any tips?

NetBSD/amd64 9.2 GENERIC on a T450 with Intel graphics inside.

rvp

dressupgeekout cuz it's a Linux binary... any tips?

Recompile gdb to include Linux support?

Or, if you just want to play the game--which doesn't look like an FPS--without crashing, force OpenGL to do SW rendering? Some links in this thread.

Or, just run the whole thing in a VM?

nia

rvp Actually it'll always do software rendering if you're trying to emulate a 32-bit Linux game on 64-bit NetBSD, there's no support for the DRM ioctls in the 64-bit<->32-bit compat layer.

I would start out with LIBGL_DEBUG=verbose though

rvp

nia Actually it'll always do software rendering if you're trying to emulate a 32-bit Linux game on 64-bit NetBSD, there's no support for the DRM ioctls in the 64-bit<->32-bit compat layer.

Didn't know this...thanks.

nia

rvp well https://freshbsd.org/netbsd/src/commit/3kjvfQnigHckqLzB

rvp

nia Aha! So the DRM code for compat_linux32 is disabled. So, is the program crashing when using the SW renderer, or when they call these non-existent thunks? (I could check myself, except that I don't have a lot of interest in games--the last game I played seriously was Half-Life 2--and even less interest in Linux compatibility.)

nia

rvp It used to work fine with swrast. I'll check after updating current - my machine is currently based on the kernel from the window where compat_linux was impossible to load (until christos fixed it)