I have further news: it is now working on my "non-working" machine using a brand new user account! So that means the issue is not system wide, but related to some user specific setting. I am quite puzzled, because I had initally reinstalled Steam entirely on my non-working user account and it did not solve the issue. So that means the problem is with another file. It is also a relief, because diagnosing it should be a lot simpler. I will let other users having the same issue know, and see if they see the same thing, and if they can help figure out the cause.

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Quoting: edddeduckferalYep I don't think the distro, card or driver version is the key to this issue. I guess it's something else but what that is is the million dollar question :)

So as discussed, I have used a blank hard drive to do a full reinstall of Archlinux 64, nvidia drivers 361.28, xorg 1.18, pulseaudio and LXDE desktop. Then installed Steam and imported XCOM2. Guess what? It works fine!

Please note the GL context errors seems to be still there, so they are not related to the bug.

Now where do you want to take it from there? It would be great to find out the key difference between the working and non-working systems, this would be so informative. Of course, the cause of the issue could be numerous, since my "non-working" system, which I have used for years, is quite different from the newly installed one. IS it a specific package? Or an update that messes up some links? Could it be related to installed fonts? They look a bit different in Steam on the new install. Or the Desktop manager?

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Quoting: edddeduckferalYep I don't think the distro, card or driver version is the key to this issue. I guess it's something else but what that is is the million dollar question :)

On Arch forums, WorMzy has the same graphics card, but for him the game is working fine, despite having the GL context error too. So the context error are likely to be a red herring. We are trying to find out differences.

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Thanks. However I checked with other users on Archlinux forums, and one person returned to me, having no issues with xorg 1.18/nvidia 361.19.

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No problem. One last question: do you use Xorg 1.17 or 1.18 at Feral? Have you tested any system with Xorg 1.18?

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Quoting: edddeduckferalWe've had 5 people including you mention this in the steam thread (4) or via support email (1) and there are few if any common denominators.

Out of those users we have 3 different distros, 3 different versions of drivers and 3 different series of Nvidia graphics card in use. However none of those cards, distros or drivers reproduce the issue and we also have a huge number of Linux players playing on exactly the same setups without issue. It's puzzling but if you have a spare partition and are willing installing a new distro it would be worth seeing what a fresh distro does as it should just work fine.

We'll keep tracking the data we get here an update you via support if we notice anything suspicious that could be the cause of this rare issue.

I was also counting this 6th user: http://www.phoronix.com/forums/forum/software/linux-gaming/850104-here-is-what-happens-when-trying-to-use-non-nvidia-drivers-to-play-xcom-2-on-linux?p=850114#post850114 [External Link] but you are right, this one crashes instead of having corrupt rendering. Could be different.

I will try in the end a new install (quite a lot of work to do :) ) and return to you. Then if it is working, I could try to play the difference game...

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Firstly, are the GL context error we see specific to those who have the menu and map rendering issue? Or is it unrelated (and thus would show to everyone)?

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Quoting: edddeduckferalWe're investigating but rare issues that cannot be reproduced on clean distro installations are the hardest to track down as they are being triggered by unknown factors and you can't fix an issue without working out the triggering factor.

Yes, I understand the problem not being able to reproduce. I am puzzled because I am using my distro standard packages, not any custom kernel/drivers, and they are known to work for other users with the same graphics card model.

Where should I look then? Should I start to remove some packages? Alternatively, what I can try is to create a new partition and do a Linux installation from scratch, and see how it goes.

However, we are 6 people reporting the same issue on Steam forums so far. I know this is not a big number, but could be enough to try recoup common denominators.

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For those who have no issue, could you please run the game using:
LIBGL_DEBUG=verbose .local/share/Steam/SteamApps/common/XCOM\ 2/XCOM2.sh
and see if you get the same GL error messages than in http://steamcommunity.com/app/268500/discussions/0/412446292761093493/#c412446292772881060 [External Link]

Thanks in advance.

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Quoting: edddeduckferalIt's definitely something custom/badly setup a that number of people have installed on their distro, the GL errors point to something with the hardware/software on the graphics or window manager side as they are failures you should never see on a correctly working system. The game is drawing badly because the distro is not initialising OpenGL correctly for XCOM 2.

But how do you explain heavy weight games such as Shadow of Mordor or Alien Isolation are working well on the same setup?

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