X11 not working on 11-STABLE with AMDGPU

[Greg V]

On Fri, Aug 3, 2018 at 2:16 AM, CL Moonriver 
<clmoonriver at equinedreams.art> wrote:
> Thanks for the heads up.
> 
> Are you sure this is still relevant in drm-next? I don't see any 
> dmesg error about disabling GPU acceleration. I did what you 
> suggested, but nothing seems to have changed except I get no text 
> until radeonkms has loaded (I don't get garbage I get nothing at 
> all). I still get dmesg errors regarding ring test failures and such, 
> so turning the EFI framebuffer off doesn't appear to have actually 
> changed anything.

Interesting. Are you 100% sure you're booting with UEFI, not CSM/legacy?

Maybe radeonkms doesn't conflict anymore. Maybe this depends on the GPU 
model or something?

For amdgpu (RX 480), it's not an error about disabling acceleration, 
the amdgpu driver *completely* fails to load when EFI framebuffer is 
active. And I retested a few weeks ago. No one fixed this specifically 
yet, so I'm not expecting it to magically stop conflicting…