debug crashing games with gdb /strace

[shoober420]

how do I debug steam games with gdb /strace? I've tried launching steam with the GAME_DEBUGGER=gdb command line parameter but it crashes steam.
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[eccerr0r]

Not sure about steam but I know that Blizzard's games, probably with Warden, does not want you to be running breakpoints into their software and will promptly crash if one tries... :(
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Intel Core i7 2700K/Radeon R7 250/24GB DDR3/256GB SSD
What am I supposed watching?

[Hu]

If possible, I suggest finding an equivalent crashing open source game and debugging that. Open source games will typically not be designed to resist debugging, and will be easier to work with because they can be built with debug symbols. Hopefully, the underlying problem is not in any particular game, so identifying its cause in an open source game will give you a change that you can use to fix all the games.

[shoober420]

I unfortunately don't have any open source games that don't run. all the source ports for games I have installed work fine. Half my steam games work, half don't. I definitely notice that Unity games are having issues launching. Also Proton isn't working either.

I can't say vulkan is broken, since vkQuake and CSGO launch using vulkan. I'm not sure why certain games don't launch. I feel it's a command line parameter I need. I know cave story needs LD_PRELOAD="" to launch.
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