| Bug ID | 104437 |
|---|---|
| Summary | RX480 + SME = amdgpu init failed + null dereference |
| Product | DRI |
| Version | DRI git |
| Hardware | x86-64 (AMD64) |
| OS | Linux (All) |
| Status | NEW |
| Severity | normal |
| Priority | medium |
| Component | DRM/AMDgpu |
| Assignee | dri-devel@lists.freedesktop.org |
| Reporter | ace@sannes.org |
Created attachment 136470 [details]
dmesg when not working
When upgrading from linux 4.13.x -> 4.14.x the amdgpu failed to come up, often
hanging my desktop computer.
Ending the amdgpg bring up with:
[drm:gfx_v8_0_ring_test_ring [amdgpu]] *ERROR* amdgpu: ring 0 test failed
(scratch(0xC040)=0xCAFEDEAD)
[drm:amdgpu_device_init [amdgpu]] *ERROR* hw_init of IP block <gfx_v8_0> failed
-22
amdgpu 0000:0a:00.0: amdgpu_init failed
After getting some help in #radeon we figured out that the culprit was that I
had enabled SME (which the CPU Ryzen X1800 support).
Got the same error on 4.15-rc6, but with additional null dereference in DC
code.
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