[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 #37 from Alex Deucher <alexdeucher at gmail.com> ---
(In reply to John Frei from comment #36)
> I assume that the second try (boot with unmodified kernel parameters) the
> module radeon was used.
> The only thing I can try is to compile the kernel without the 'amdgpu CIK
> parts', but this should not affect the radeon module, right?

Either disable CIK support in amdgpu or blacklist the amdgpu module (e.g.,
modprobe.blacklist=amdgpu on the kernel command line in grub) to keep the
amdgpu driver from loading on CIK hardware.

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