Created attachment 145903 [details]
Kernel logs with resume errors

In the last two weeks the gpu has failed to resume 4 out of 26 suspend/resume
cycles.  Prior to that, the 5.0 kernel (Ubuntu 9.04) did not have this problem.

Here are excerpts from the resume failures.  I am attaching the full kernel
logs from the four crashes.  The first group (gfx_v8_0) has happened three
times, the second group (sdma_v3_0) has happened one time.

--
amdgpu 0000:07:00.0: [drm:amdgpu_ring_test_helper [amdgpu]] *ERROR* ring gfx
test failed (-110)
[drm:amdgpu_device_ip_resume_phase2 [amdgpu]] *ERROR* resume of IP block
<gfx_v8_0> failed -110
[drm:amdgpu_device_resume [amdgpu]] *ERROR* amdgpu_device_ip_resume failed
(-110).
PM: dpm_run_callback(): pci_pm_resume+0x0/0xa0 returns -110
PM: Device 0000:07:00.0 failed to resume async: error -110
--
amdgpu 0000:07:00.0: [drm:amdgpu_ring_test_helper [amdgpu]] *ERROR* ring sdma0
test failed (-110)
[drm:amdgpu_device_ip_resume_phase2 [amdgpu]] *ERROR* resume of IP block
<sdma_v3_0> failed -110
[drm:amdgpu_device_resume [amdgpu]] *ERROR* amdgpu_device_ip_resume failed
(-110).
PM: dpm_run_callback(): pci_pm_resume+0x0/0xa0 returns -110
PM: Device 0000:07:00.0 failed to resume async: error -110