Mechwarrior Online (342200)

Compatibility Report

• Name of the game with compatibility issues: Mechwarrior Online (Solaris 7)
• Steam AppID of the game: 342200

System Information

• GPU: GTX 960
• Driver/LLVM version: nvidia 396.54
• Kernel version: 4.15.0-33-generic
• Link to full system information report as Gist:
• Proton version: 3.7 Beta

I confirm:

• that I haven't found an existing compatibility report for this game.
• that I have checked whether there are updates for my system available.

steam-342200.log

Symptoms

Game will start normally and at random times, anywhere from the first vendor splash to almost having the initial mechlab "level" loaded, will crash with dialog stating "Unexpected error".

Also see a dialog at game start that complains that the graphics card (GTX 960) is not recognized and I may have issues (this is the same machine that plays the game fine under Windows).

Reproduction

1. Install Steam, install nVidia 396 driver, opt-in to beta and select "steam play for all titles" and enable the beta Proton (and of course do the N restarts that Steam asks to do).
2. Install game from Steam
3. Run game from Steam, no need to touch or click anything (unless you get to the login screen), game will crash without any help

Review steam-342200.log and the linked system-information Gist, then reproduce the crash using the listed Proton 3.7 Beta, driver, kernel, and GTX 960 setup. Compare the crash timing and graphics-card warning with the numbered reproduction steps; done means documenting a confirmed cause or a verified compatibility result.