according to https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=864477, Gentoo is using the non-GLVND version of the driver, and is therefore reporting the incorrect library in /etc/vulkan/icd.d/nvidia_icd.json Replace "libGLX_nvidia.so.0" with "libGL.so.1" in the file, and vulkan applications will magically begin working.
Can you please be more specific in what way are the applications broken?
Created attachment 525428 [details] F1 2017 (Commercial Game) error when normal nvidia_icd.json is used Normal behavior when unmodified nvidia-drivers is used. In addition, other vulkan-based applications (tested Dolphin and Retroarch) both fail to launch, or launch to a black screen, in vulkan mode, but work perfectly post-modification of /etc/vulkan/icd.d/nvidia_icd.json
had to re-do the change for nvidia-drivers-415.13. { "file_format_version" : "1.0.0", "ICD": { "library_path": "libGL.so.1", "api_version" : "1.1.84" } } Vulkan works again after this change.
proper /etc/vulkan/icd.d/nvidia_icd.json file for 396.54 (current stable): { "file_format_version" : "1.0.0", "ICD": { "library_path": "libGL.so.1", "api_version" : "1.1.70" } }
I can confirm this for the last few driver versions (from 415.13 to the newest beta, 418.30). Without the filename change Vulkan programs crash on start, though for some reason this does not affect vkcube. Testing with Dota 2, it consistently fails to start without the library name change when using -Vulkan in launch options, while it starts fine in both cases when not using Vulkan (as expected). The same sort of crash happens with Elite Dangerous when ran through steam proton with the Vulkan translation layer.
Can also confirm that this fixed a variety of issues for me, including Lutris and rpcs3. (both vulkan applications).
Turns out, this issue affects those using -compat as well (worst. default. option. ever.), so it doesn't appear to be GLVND-specific. This is a Vulkan issue with the /etc/vulkan/icd.d/nvidia_icd.json file
Is this still a problem? I've tested samples from https://github.com/SaschaWillems/Vulkan and vulkan works fine for me.
There was still a lot of oddities going on in 2018-2019 with glvnd, and old compat libraries are gone now. If someone still has issues with vulkan please open a new bug, I'd like to review issues with a current setup.
