On 10 June 2017 at 16:36, Luca Boccassi <luca.bocca...@gmail.com> wrote: > > On Sat, 2017-06-10 at 14:19 +0200, Andreas Beckmann wrote: > > On 2017-06-10 13:58, Luca Boccassi wrote: > > > > This issue causes crashes on startup when the non-GLVND driver is > > > > installed in our (Feral Interactive) games which support Vulkan, > > > > specifically the Mad Max Vulkan beta branch and the just-released > > > > Dawn > > > > I'm afraid, the vulkan stuff has not been widely tested, yet. > > I do try to give it a shot before uploading, but I only have Dota 2 on > Steam. I have tested that one before uploading 375.66 and it was fine. > > > > > of War III, even when not launching the game with Vulkan enabled. > > > > Is it still checking whether vulkan were available (loading the > > vulkan > > loader library might be sufficient)? Otherwise I don't see how this > > could be related ...
Yep, the problem is that we try to detect both GL and Vulkan support at startup so both get loaded. > > > > > > I'll try to propose this for the first point release though since > > > it > > > sounds pretty broken. > > > > Sounds like a plan :-) > > And given the recent CVE frequency, we might need a newer upstream at > > that time, too :-( > > > > I had a look at the nvidia-installer source and could not find > > anything > > that updates the json files. And since there is only one json variant > > shipped, I'm curious how the modified one comes into existence. > > > > I haven't tried an installer-based installation in a chroot in a long > > time ... > > I just did, and the file doesn't seem to be any different: > > # grep library /etc/vulkan/icd.d/nvidia_icd.json > "library_path": "libGLX_nvidia.so.0", > "library_path": "libGLX_nvidia.so.0", > > I used the non glvnd flags for the installer: > > # find / -name libOpenGL.so.0 > # find / -name libGLdispatch.so.0 > # find / -name libGLX.so.0 > # find / -name libOpenGL.so.0 > # find / -name libGL.so.1 > > > Alex, does this solution come from Nvidia's support? If you have tested > that it works, we could modify it ourselves. > > Andreas, given we ship it in /usr/share, perhaps the easiest thing > would be to modify in the maintainer scripts (via config-package-dev > maybe) in the non-GLVND GLX package. What do you think? Interesting... an NVIDIA engineer explicitly said to me that the correct thing to do is use libGL.so.1 for non-GLVND and libGLX_nvidia.so.0 for GLVND. Seems like their installer is getting that wrong though - I've just tested here too, if I install without GLVND from their installer I get the wrong library path and a crash when I launch one of our affected games. I've pinged them about it again just to double check, I'll let you know what they say. Thanks, Alex > > Kind regards, > Luca Boccassi
