Bug 651400 – x11-drivers/nvidia-drivers vulkan non-glvnd json file is incorrect - vulkan doesn't work correctly

• Product: Gentoo Linux
• Status: RESOLVED OBSOLETE

[Description Jason Oliveira 2018-03-25 03:38:06 UTC]

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.

[Comment 1 Tomáš Mózes 2018-03-25 08:28:12 UTC]

Can you please be more specific in what way are the applications broken?

[Comment 2 Jason Oliveira 2018-03-25 17:40:40 UTC]

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

[Comment 3 Jason Oliveira 2018-11-24 19:34:28 UTC]

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.

[Comment 4 Jason Oliveira 2018-12-05 05:35:42 UTC]

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"
    }
}

[Comment 5 Matti Eskelinen 2019-02-07 22:25:21 UTC]

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.

[Comment 6 Alexandru N. Barloiu 2019-04-02 17:01:10 UTC]

Can also confirm that this fixed a variety of issues for me, including Lutris and rpcs3. (both vulkan applications).

[Comment 7 Jason Oliveira 2019-08-04 10:06:10 UTC]

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

[Comment 8 David Seifert 2021-01-10 21:49:25 UTC]

Is this still a problem? I've tested samples from https://github.com/SaschaWillems/Vulkan and vulkan works fine for me.

[Comment 9 Ionen Wolkens 2021-03-06 08:35:05 UTC]

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.