Running on Ubuntu 18.04.3 LTS
AMD Ryzen 5 2600 3.7 GHz
16 GB
GeForce GTX 960 4 GB (Using Latest NVIDIA Drivers)

If I set the game to low graphics settings it runs.

Most options in the graphics options screen cause problems.

The game runs but only displays the loading screeen. What I mean by this is that sound and dialogue play, and if you use the control from the dialog responses and sound changes, the game seems to be accepting input from my controller, but the loading screen is all I see.

Some settings are fine:

Shadow Quality Ultra
Level Detail (Max)

Others cause a problem:

Shader quality to high
Antialiasing enabled

Any ideas, I want to run the game with graphics better than low, and I have a graphics card above the recommended level, but I cannot seem to get it to work.

Looking at other posts:

I have tried the fullscreen to "0" fix, although my problem seems different, this caused the game to crash.
I have tried turning off my second monitor (disabling in Ubuntu settings).
I tried passing -force-opengl at the command line, but his is either not supported or just didn't work.

I am also having issues with no graphics displayed on Ubuntu 18.04 with Nvidia drivers. I have a support issue with gog.com. I'll update here if I learn anything helpful.

The developers gave me this workaround that helps with some graphics-related problems on Linux. It worked for me.

Hi,

I have a new system (AMD Zen 2 [Ryzen 5 3600] & Navi 10 [RX 5700 XT] on Ubuntu 19.10 STS (Eoan) with Linux 5.7 Vanilla and Ubuntu 20.04 Focal with Linux 5.6 OEM by Ubuntu Kernel PPA) and thought that would be ideal for Kona ... but first I seemed to be proved wrong.
Why is the problem with black screen not fixed?
But the result is a FullHD screen in the lower left and the rest blinking like crazy with garbage characters.
And it is not only that, when trying to change options after changing prefs to fullscreen 0 (I use 4k resultion and found that it is better to change height to 2160 and width to 3840) the mouse makes the interface to get uncontrollable (there is a yellow cursor which seems to work correctly - but nothing can be clicked and moving it results in the UI going crazy). So one should change it with a controller (Logitech F310 did it for me): using Ultra for both Shadow Quality and Special Effects, 4k resolution (if so inclined) and FullScreen on.
After that the game looks good (for both Eoan@5.7 and Focal@5.6).

It is clear that Unity is not the problem ... so why is it not fixed properly.
I just get the solution by chance giving first up on Eoan (really cruel) and starting a second try with Focal (and gamepad) - and after this I went back to Eoan and changed res in prefs file to 4k resolution ... and was able to do the changes, apply it and got it working too.

So my situation seems to be even more severe than former ones with Nvidia (or they may be lucky to by chance don't use the mouse at all - and probably not using 4k).
So fixing this ugly bug would be very welcome ... but at least it can work after fighting the configs and graphics option menu.

JMB

The issue is still not fixed. The workaround worked until I relaunched the game and the issue reappeared. Is the Linux version just broken?

Yes, the Linux version is broken in that it does not work fullscreen. If you try, you'll probably get a black screen. Even the menu will be black when you launch the game again, so you'll have to edit or remove the config file. However, the game seems to work fine in windowed mode.

Same here with Xubuntu 20.04. The issue is reappeared and the game work perfectly until I resume the game. After that, I must rewrite the file every time I reload the game. Is there some permanently solution?