[Bug 91880] Radeonsi on Grenada cards (r9 390) exceptionally unstable and poorly performing

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Comment # 195 on bug 91880 from
(In reply to Sandeep from comment #194)
> So, I had never used amdgpu.dc=1 and amdgpu.dpm=1 kernel parameters when
> testing earlier.
> 
> I tried using them now, with the 4.16.7 kernel, and replayed the APItrace
> file. No crashes! Finally.
> 
> Well, this is still a workaround, but atleast it works. I doubt it has
> anything to do with DC, although it's possible......

setting dpm=1 uses the new powerplay code rather than the old dpm code for
power management on CI parts.


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