So, I recently started having a problem in Mesa 25.2.x where if I try to start a DXVK game, it just crashes instantly. 25.1.7 is the last version in the repos which works normally, so I downgraded back to that as it’s in my package cache still.

Is anyone else having this problem or is it just me?

I tested with my Vega 56 to rule out hardware issues, and I tried a random DXVK game with the latest stable Mesa drivers and it exhibited the same behavior both on the Vega 56 and the RX 6600 I normally use, so it isn’t a hardware problem.

Also, this happens regardless of if I’m running an affected game in Steam or Lutris.

I have Mesa and the related packages set on the ignore list in pacman.conf for the time being so it can stay on 25.1.7 until I know what’s going on, and Vulkan and VKD3D both still work, it’s DXVK that’s affected specifically.

Edit: It was a Mangohud problem.