Dota 2: Black screen on Linux

Game keep hanging after launch.

Dota 2 won’t start

One thing that worked for me —which also improved the game performance— was to switch from Vulkan to OpenGL by passing -gl to the Launch Options.

You can also try forcing Vulkan if OpenGL doesn’t work for you by passing -vulkan instead.

Reference

• Dota 2 - Steam/Game-specific troubleshooting