Your system information

• Steam client version (build number or date): 1556574584
• Distribution (e.g. Ubuntu): nixos
• Opted into Steam client beta?: No
• Have you checked for system updates?: Yes

Please describe your issue in as much detail as possible:

When starting steam with amdgpu on linux 5.1.0 it crashes my xorg with a GPU reset.
Log:

May 14 18:57:30 tuxbase kernel: amdgpu 0000:08:00.0:   in page starting at address 0x0000000000000000 from 27
May 14 18:57:30 tuxbase kernel: amdgpu 0000:08:00.0: VM_L2_PROTECTION_FAULT_STATUS:0x0020153D
May 14 18:57:30 tuxbase kernel: amdgpu 0000:08:00.0: [gfxhub] no-retry page fault (src_id:0 ring:158 vmid:2 pasid:32775, for process vulkandriverque pid 28248 thread vulkandriverque pid 28248)
May 14 18:57:30 tuxbase kernel: amdgpu 0000:08:00.0:   in page starting at address 0x0000000000000000 from 27
May 14 18:57:30 tuxbase kernel: amdgpu 0000:08:00.0: VM_L2_PROTECTION_FAULT_STATUS:0x00000000
May 14 18:57:30 tuxbase kernel: amdgpu 0000:08:00.0: [gfxhub] no-retry page fault (src_id:0 ring:158 vmid:2 pasid:32775, for process vulkandriverque pid 28248 thread vulkandriverque pid 28248)
May 14 18:57:30 tuxbase kernel: amdgpu 0000:08:00.0:   in page starting at address 0x0000000000000000 from 27
May 14 18:57:30 tuxbase kernel: amdgpu 0000:08:00.0: VM_L2_PROTECTION_FAULT_STATUS:0x00000000
May 14 18:57:30 tuxbase kernel: amdgpu 0000:08:00.0: [gfxhub] no-retry page fault (src_id:0 ring:158 vmid:2 pasid:32775, for process vulkandriverque pid 28248 thread vulkandriverque pid 28248)
May 14 18:57:30 tuxbase kernel: amdgpu 0000:08:00.0:   in page starting at address 0x0000000000000000 from 27
May 14 18:57:30 tuxbase kernel: amdgpu 0000:08:00.0: VM_L2_PROTECTION_FAULT_STATUS:0x00000000
May 14 18:57:30 tuxbase kernel: amdgpu 0000:08:00.0: [gfxhub] no-retry page fault (src_id:0 ring:158 vmid:2 pasid:32775, for process vulkandriverque pid 28248 thread vulkandriverque pid 28248)
May 14 18:57:30 tuxbase kernel: amdgpu 0000:08:00.0:   in page starting at address 0x0000000000000000 from 27
May 14 18:57:30 tuxbase kernel: amdgpu 0000:08:00.0: VM_L2_PROTECTION_FAULT_STATUS:0x00000000
May 14 18:57:30 tuxbase kernel: amdgpu 0000:08:00.0: [gfxhub] no-retry page fault (src_id:0 ring:158 vmid:2 pasid:32775, for process vulkandriverque pid 28248 thread vulkandriverque pid 28248)
May 14 18:57:30 tuxbase kernel: amdgpu 0000:08:00.0:   in page starting at address 0x0000000000000000 from 27
May 14 18:57:30 tuxbase kernel: amdgpu 0000:08:00.0: VM_L2_PROTECTION_FAULT_STATUS:0x00000000
May 14 18:57:30 tuxbase kernel: amdgpu 0000:08:00.0: [gfxhub] no-retry page fault (src_id:0 ring:158 vmid:2 pasid:32775, for process vulkandriverque pid 28248 thread vulkandriverque pid 28248)
May 14 18:57:30 tuxbase kernel: amdgpu 0000:08:00.0:   in page starting at address 0x0000000000000000 from 27
May 14 18:57:30 tuxbase kernel: amdgpu 0000:08:00.0: VM_L2_PROTECTION_FAULT_STATUS:0x00000000
May 14 18:57:30 tuxbase kernel: amdgpu 0000:08:00.0: [gfxhub] no-retry page fault (src_id:0 ring:158 vmid:2 pasid:32775, for process vulkandriverque pid 28248 thread vulkandriverque pid 28248)
May 14 18:57:30 tuxbase kernel: amdgpu 0000:08:00.0:   in page starting at address 0x0000000000000000 from 27
May 14 18:57:30 tuxbase kernel: amdgpu 0000:08:00.0: VM_L2_PROTECTION_FAULT_STATUS:0x00000000
May 14 18:57:30 tuxbase kernel: amdgpu 0000:08:00.0: [gfxhub] no-retry page fault (src_id:0 ring:158 vmid:2 pasid:32775, for process vulkandriverque pid 28248 thread vulkandriverque pid 28248)
May 14 18:57:30 tuxbase kernel: amdgpu 0000:08:00.0:   in page starting at address 0x0000000000000000 from 27
May 14 18:57:30 tuxbase kernel: amdgpu 0000:08:00.0: VM_L2_PROTECTION_FAULT_STATUS:0x00000000
May 14 18:57:30 tuxbase kernel: amdgpu 0000:08:00.0: [gfxhub] no-retry page fault (src_id:0 ring:158 vmid:2 pasid:32775, for process vulkandriverque pid 28248 thread vulkandriverque pid 28248)
May 14 18:57:30 tuxbase kernel: amdgpu 0000:08:00.0:   in page starting at address 0x0000000000000000 from 27
May 14 18:57:30 tuxbase kernel: amdgpu 0000:08:00.0: VM_L2_PROTECTION_FAULT_STATUS:0x00000000
May 14 18:57:41 tuxbase kernel: [drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring gfx timeout, signaled seq=1818717, emitted seq=1818719
May 14 18:57:41 tuxbase kernel: [drm:amdgpu_job_timedout [amdgpu]] *ERROR* Process information: process vulkandriverque pid 28248 thread vulkandriverque pid 28248
May 14 18:57:41 tuxbase kernel: amdgpu 0000:08:00.0: GPU reset begin!

It seems to happen during this phase of the steam launch (it's the last thing I see on the screen before the GPU crashes)

Fossilize INFO: Overriding serialization path: "/home/philipp/.local/share/Steam/shader_cache_temp_dir_vk_64/steamapprun_pipeline_cache".
amdgpu: radv_amdgpu_cs_query_fence_status failed.
Fatal : VkResult is "TIMEOUT" in /home/pgriffais/src/Vulkan/base/VulkanDevice.hpp at line 548
vulkandriverquery: /home/pgriffais/src/Vulkan/base/VulkanDevice.hpp:548: void vks::VulkanDevice::flushCommandBuffer(VkCommandBuffer, VkQueue, bool): Assertion `res == VK_SUCCESS' failed.

Steps for reproducing this issue:

1. Install most recent nixos with kernel 5.1.0
2. start steam
3. crash