d3Xt3r, 3 months ago (edited 3 months ago)

First, enable the multilib repo as per the other comment.

Then, to get Vulkan working properly on Optimus, install the following packages:

primus_vk vulkan-tools vulkan-icd-loader lib32-vulkan-icd-loader nvidia-utils lib32-nvidia-utils

After that, run vulkaninfo - if you see info about your graphics card, you will know that Vulkan is working correctly. vkcube is another app you can run to test Vulkan.

Also, according to ProtonDB, you’ll need to set the following launch options in Steam for DotA 2:

gamemoderun %command% -novid -high -vconsole