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

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91880

--- Comment #195 from Alex Deucher <alexdeucher at gmail.com> ---
(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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