Copy from https://github.com/ValveSoftware/Proton/issues/813

For-AMD-users-having-issues-with-non-OpenGL-games.md

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+# For AMD users having issues with non-OpenGL games
+
+Vulkan requires the `amdgpu` driver, it doesn't detect the graphics adapter when using `radeon`.
+
+If you're experiencing crashes or the game doesn't load at all, it's probably because your distribution defaults to the `radeon` driver and Vulkan may be using Intel's graphics adapter instead (if available).
+
+If that's the case, `amdgpu` has to be enabled explicitly in the kernel commandline.
+
+## Instructions for Debian/Ubuntu
+
+Open your terminal and run `sudo nano /etc/default/grub`.
+
+Append to `GRUB_CMDLINE_LINUX_DEFAULT`:
+- `radeon.si_support=0 amdgpu.si_support=1` if you have a Southern Islands card.
+- `radeon.cik_support=0 amdgpu.cik_support=1` if you have a Sea Islands card.
+
+For example: `GRUB_CMDLINE_LINUX_DEFAULT="quiet radeon.cik_support=0 amdgpu.cik_support=1"`
+
+Save with `CTRL+X` followed by `Y` and then `Enter`.
+
+Run `sudo update-grub` and then reboot your system.
+
+You can check which driver is loaded by running `lspci -k`:
+```
+01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Hawaii PRO [Radeon R9 290/390]
+        Subsystem: PC Partner Limited / Sapphire Technology Hawaii PRO [Radeon R9 290/390]
+        Kernel driver in use: amdgpu
+        Kernel modules: radeon, amdgpu
+```
+
+If your desktop environment doesn't load, check the kernel log by running `sudo dmesg`. If you see that `amdgpu` is crashing, append `amdgpu.dc=0` to the kernel commandline.
+
+## Instructions for Arch Linux
+
+https://wiki.archlinux.org/index.php/AMDGPU
+
+## If you're still encountering issues
+
+Write a message in https://github.com/ValveSoftware/Proton/issues/813.