Issue with launching Rust from Steam (on Ubuntu 18.04)

Solution 1:

The error looks pretty straightforward.

Vulkan detection: 0
No supported renderers found, exiting

This may mean either that your Graphics card has no vulkan driver support (generally because it is too old to be supported), or simply that you don't have the necessary driver/support packages installed.

(An OpenGL renderer hasn't been supported since some time early 2019, according to a youtube video I found.)

The output of the command vulkaninfo could give more info about your vulkan support. (If it doesn't exist, install the vulkan-tools or vulkan-utils package to get it.)

If that command doesn't exit with an error, such as VK_ERROR_INITIALIZATION_FAILED, then there is a chance you can get it to work.

And probably a simple internet search will already tell you whether your graphics card should have Vulkan support.

Bear in mind that, even if you can solve the renderer issue, the game may not work. There is the possibility that the EAC Anti-Cheat will kick you out, since they have stopped their Linux support (at least for this title).

Or, since Facepunch Studios themselves have stopped supporting Linux, there is the chance that it won't work simply because the Unity engine shipped with the Linux build has issues (Perhaps they still drop updates for Linux unofficially, perhaps they don't - I have no clue.) or they might even actively kick linux clients, since no adequate cheat protection might negatively influence the playerbase as a whole (dev reddit post).

Solution 2:

Linux and Mac were using a rather old version of OpenGL that didn't support many of the optimizations we were using on Windows and would regularly break shaders. In order to make future development easier for us and give the two people playing on those platforms a slightly better experience we decided to move Linux to Vulkan and Mac to Metal. This means that if you're on Linux you should install the absolute latest graphics drivers you can get your hands on and ensure that you are no longer adding the "-force-opengl" startup parameter since that will break the game. You can also give Vulkan a try on Windows with the "-force-vulkan" startup parameter, but on most graphics drivers there are still some issues so we generally recommend staying on DirectX for now.
Facepunch said on there site.