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I've recently purchased a new XFX RX580 card, and am running it on Fedora 29. I have 3 Dell monitors running at 2560x1440.
Unfortunately, with this setup, periodically and randomly one monitor of the three will go completely black for 2-3 seconds, and then come back. I say randomly because it does not seem to be associated with GPU load, though it does seem happen more often in certain situations, e.g. Google Meet is open and active. When this happens there are no other issues on the system -- no freezes, absolutely nothing in the dmesg or Xorg logs, or really any indication at all that anything is wrong.
Things I have tried:
* The amdgpu Xorg DDX driver, with and without the amdgpu.dc=0 setting
* The modeset Xorg DDX driver with the amdgpu.dc=0 setting
* Using plasma-wayland instead of X
* Swapping monitors and cables, buying new cables
* Swapping hardware with a new card through RMA with XFX (same exact issue with the new card)
In all cases, the behavior is exactly the same.
Bugs I have filed:
My primary purpose for asking here is to see if anyone has any other ideas for debugging to try, and secondary purpose is to poll opinions on whether this is likely to be a hardware issue with this complete line of cards, in which case I will attempt to return this XFX card and replace it with something completely different), or whether its likely to be a driver issue, in which case I can probably live with the problem in the hope that it will be fixed at some point.
Code:
0a:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Ellesmere [Radeon RX 470/480/570/570X/580/580X/590] (rev e7)
Code:
Linux edison 4.19.13-300.fc29.x86_64 #1 SMP Sat Dec 29 22:54:28 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
Things I have tried:
* The amdgpu Xorg DDX driver, with and without the amdgpu.dc=0 setting
* The modeset Xorg DDX driver with the amdgpu.dc=0 setting
* Using plasma-wayland instead of X
* Swapping monitors and cables, buying new cables
* Swapping hardware with a new card through RMA with XFX (same exact issue with the new card)
In all cases, the behavior is exactly the same.
Bugs I have filed:
My primary purpose for asking here is to see if anyone has any other ideas for debugging to try, and secondary purpose is to poll opinions on whether this is likely to be a hardware issue with this complete line of cards, in which case I will attempt to return this XFX card and replace it with something completely different), or whether its likely to be a driver issue, in which case I can probably live with the problem in the hope that it will be fixed at some point.
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