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

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

--- Comment #195 from Alex Deucher alexdeucher@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.